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00:00:02,137 --> 00:00:05,068
--Captions by VITAC--
www.vitac.com
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00:00:05,068 --> 00:00:08,000
CAPTIONS PAID FOR BY
DISCOVERY COMMUNICATIONS
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Narrator:
FOR THOUSANDS OF YEARS,
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ABORIGINAL PEOPLES
HAVE USED DRUMS
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TO CALL ON HEALING SPIRITS.
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00:00:59,689 --> 00:01:03,241
BUT THE SOUND OF THE DRUM ITSELF
CAN BE A SOURCE OF RENEWAL.
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THE REPETITIVE BEAT
CAN INDUCE A MEDITATIVE STATE
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00:01:05,862 --> 00:01:09,310
WHICH MAY ACTUALLY HAVE
HEALING PROPERTIES.
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TODAY, A NEW GENERATION
BEATS THE DRUM
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00:01:17,655 --> 00:01:21,172
TO HEAL BODY AND SPIRIT.
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THESE YOUNG MEN
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ARE FROM THE TEWA TRIBE
OF NORTHERN NEW MEXICO.
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00:01:27,724 --> 00:01:30,275
LIKE THEIR ANCESTORS
BEFORE THEM,
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THEY CHANT AND DRUM
IN A RHYTHMIC APPEAL TO HEAL.
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TO MAKE A HEALING DRUM,
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THEY START WITH PIECES
OF PINE OR SPRUCE --
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SOFT WOODS THAT ARE LIGHTWEIGHT.
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THE NATIVE CRAFTSMAN CREATES
AN OCTAGONAL DESIGN
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AND LEAVES THE GLUE JOINTS
TO DRY.
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THE NEXT CRAFTSMAN
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SOAKS A COWHIDE IN WATER
TO MAKE IT SOFT AND PLIABLE.
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HE DRAPES THE WET HIDE
OVER A DRUM FRAME
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AND AS HE DOES, HE LOOKS
FOR CUTS OR THIN PATCHES.
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00:02:03,517 --> 00:02:06,724
HE ARRANGES IT SO THAT ANY FLAWS
AREN'T APPARENT.
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00:02:06,724 --> 00:02:08,620
HE THEN TRIMS THE HIDE.
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THIS PARTICULAR DRUM
IS FOR POWWOWS.
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00:02:11,310 --> 00:02:12,482
SO IT'S EXTRA LARGE.
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IT'S A TWO-SIDED VERSION
FOR A DEEPER TONE.
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00:02:15,482 --> 00:02:18,517
HE PULLS THE WET HIDE
TO THE DESIRED TENSION
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00:02:18,517 --> 00:02:20,862
AND PUNCHES HOLES
IN THE SKIRTING.
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00:02:20,862 --> 00:02:22,758
HE HAMMERS NAILS
THROUGH THE HOLES
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TO TACK THE HIDE TO THE FRAME
AND CUTS A SCALLOPED EDGE.
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HE THEN TACKS A HIDE
TO THE OTHER SIDE.
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00:02:29,862 --> 00:02:33,620
HE PLACES ANOTHER PIECE
OF WET RAWHIDE ON A SPIRAL BLADE
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00:02:33,620 --> 00:02:37,931
AND POUNDS THE HIDE INTO IT
USING A HICKORY MALLET.
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00:02:37,931 --> 00:02:41,448
THIS SLICES THE LEATHER
INTO A LONG, THIN LACE.
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HE EXTRACTS THE LACE
FROM THE CUTTER.
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AFTER SOFTENING IT WITH WATER,
HE TAKES IT OUTSIDE.
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00:02:48,793 --> 00:02:51,068
HE WRAPS ONE END AROUND A POST
AND PULLS,
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00:02:51,068 --> 00:02:53,620
STRETCHING THE LEATHER
TO REMOVE SLACK.
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IT BREAKS AT ANY WEAK POINTS,
LEAVING THE STRONGEST PARTS.
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HE NOW LACES THE LEATHER
DRUMHEADS TO THE FRAME.
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00:03:00,586 --> 00:03:04,413
HE CUTS A SLIT IN THE END
AND PULLS THE REST OF THE LACE
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THROUGH THE SLIT
TO KNOT IT TO THE DRUMHEAD.
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HE ZIGZAGS THE LACING
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THROUGH ALTERNATE HOLES
IN THE THE TWO DRUMHEAD HIDES.
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HE TUGS THE LACE AS HE GOES
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TO PULL THE LEATHER DRUMHEADS
TIGHTLY TO THE FRAME.
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ONCE COMPLETE,
HE KNOTS THE OTHER END.
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HE THREADS THE SECOND PIECE
OF LACE
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THROUGH THE REMAINING HOLES,
CREATING A CRISSCROSS PATTERN.
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PAINT APPLIED
TO THE FRAME EARLY ON
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SHOWS THROUGH
THE CRISSCROSS WEAVE.
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THE LEATHER DRIES
TO A DARK PATINA
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FOR A STUNNING CONTRAST
TO THE BLUE HUE.
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THIS DOUBLE-SIDED DRUM
IS NOW READY FOR A POWWOW.
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TO MAKE
A SINGLE-SIDED HEALING DRUM,
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THEY BEND A PIECE OF WOOD
INTO A COMPLETE CIRCLE.
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A CRAFTSPERSON SIGNS AND STAMPS
THE MAKER'S INFORMATION
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ON THE INSIDE.
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THEN IT'S OVER
TO THE DRUM MAKER.
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00:03:58,862 --> 00:04:01,551
SHE PULLS A WET HIDE
TO THE WOODEN HOOP
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00:04:01,551 --> 00:04:05,379
AND FOLDS IT UNDER THE RIM,
SMOOTHING OUT ANY PUCKERS.
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00:04:05,379 --> 00:04:09,068
SHE PUNCHES HOLES FOR SECURING
THE DRUMHEAD TO THE WOODEN HOOP
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00:04:09,068 --> 00:04:12,068
AND SLICES OFF THE EXCESS HIDE.
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SHE'S NOW READY TO LACE
THE DRUMHEAD TO THE FRAME.
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SHE TIES THE SKIN TO THE FRAME
IN A CONFIGURATION
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THAT LOOKS LIKE THE SPOKES
OF A BICYCLE WHEEL.
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SHE PULLS IT TIGHTLY
FOR THE DESIRED TONALITY.
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IT'S ALL IN THE TECHNIQUE.
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00:04:28,655 --> 00:04:30,827
IF SHE DOESN'T GET IT RIGHT NOW,
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THE WET DRUMHEAD WILL WARP
AS IT DRIES.
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THE LEATHER SPOKES MEET
AT THE CENTER IN A CROSS
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WHERE THE DRUMMER WILL GRIP IT.
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THE LEATHER DARKENS AS IT DRIES
AND THE TENSION SETS.
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00:04:45,758 --> 00:04:48,103
SHE NOW WEAVES STRIPS
OF TANNED LEATHER
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AROUND THE CROSS AT THE CENTER.
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IT'S A DECORATIVE TOUCH
THAT ALSO GIVES THE DRUMMER
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SOMETHING MORE SUBSTANTIAL
TO HOLD ON TO.
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THE DRUMMER WILL HOOK A THUMB
IN THE CROSS SECTION
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00:05:01,413 --> 00:05:03,758
TO HOLD THE DRUM
WITH AN OPEN HAND.
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00:05:07,310 --> 00:05:11,448
AN ARTIST PAINTS SYMBOLIC IMAGES
ON THE NATIVE HEALING DRUM.
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SHE WORKS FREESTYLE.
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00:05:14,931 --> 00:05:18,034
A FEW STROKES OF THE BRUSH
PRODUCE A BUFFALO...
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00:05:18,034 --> 00:05:20,137
AND THEN THEN AN ENTIRE HERD.
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00:05:22,448 --> 00:05:25,689
FOR NATIVE PEOPLES
OF NORTH AMERICA,
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THE BISON IS A SYMBOL
OF STRENGTH AND UNITY.
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A CORN MAIDEN PAINTING ON A DRUM
REPRESENTS ABUNDANCE.
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IT'S ART DESIGNED TO HELP ONE
HEAL TO THE BEAT.
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Narrator: INCREDIBLY,
PEOPLE HAVE BEEN DRYING GRAPES
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TO TURN THEM INTO RAISINS
FOR 2,000 YEARS.
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TODAY, THERE ARE POTATO CHIPS
AND CHOCOLATE BARS,
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00:06:00,896 --> 00:06:03,379
BUT PEOPLE ARE STILL SNACKING
ON RAISINS.
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00:06:03,379 --> 00:06:06,068
PRESERVED AND SWEETENED
BY THE DRYING PROCESS,
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THEY CAN STILL BE ENJOYED
ANYTIME, ANYWHERE.
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00:06:12,551 --> 00:06:15,000
2,000 YEARS
ON THE SNACK CIRCUIT,
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00:06:15,000 --> 00:06:17,344
AND RAISINS STILL GET
PLENTY OF NIBBLES.
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THEY'RE ALSO
A POPULAR INGREDIENT
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IN BAKED GOODS, CEREALS,
AND SALADS.
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00:06:23,793 --> 00:06:25,586
AT THIS CALIFORNIA VINEYARD,
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00:06:25,586 --> 00:06:28,103
THEY PLANT GRAPEVINE CUTTINGS
IN LATE WINTER.
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THEY'RE THE SEEDLESS KIND.
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00:06:30,103 --> 00:06:33,620
THESE CUTTINGS TAKE THREE YEARS
TO GROW AND BEAR FRUIT.
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00:06:33,620 --> 00:06:35,724
EACH WINTER,
THEY PRUNE THE VINES,
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00:06:35,724 --> 00:06:38,206
CUTTING AWAY WEAKER CANES
AND DEAD WOOD.
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PRUNING REDUCES
THE NUMBER OF BUDS.
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SO THE PLANT'S ENERGY
GOES TO THE ONES THAT REMAIN,
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00:06:43,482 --> 00:06:46,827
RESULTING
IN LARGER FRUIT CLUSTERS.
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00:06:46,827 --> 00:06:49,965
THEY TWIST THE REMAINING CHUTES
AROUND AN OVERHEAD WIRE TRELLIS
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00:06:49,965 --> 00:06:52,000
AND TIE THEM TO IT.
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00:06:53,965 --> 00:06:56,275
GRAPEVINES ARE NATURAL CLIMBERS.
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00:06:56,275 --> 00:06:58,344
SECURING THEM TO THE TRELLIS
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00:06:58,344 --> 00:07:02,413
POSITIONS THEM TO GROW IN AN ARC
FOR MAXIMUM SUN EXPOSURE.
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00:07:03,827 --> 00:07:06,068
THEY PIPE WATER
BETWEEN THE ROWS.
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00:07:06,068 --> 00:07:08,517
IT POOLS THERE
AND SEEPS INTO THE SOIL
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00:07:08,517 --> 00:07:10,965
AND DOWN TO THE ROOTS
OF THE VINES.
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00:07:10,965 --> 00:07:14,413
THESE PARTICULAR VINES ARE
GROWING ON T-SHAPED TRELLISES.
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00:07:14,413 --> 00:07:17,310
IT'S AN OLDER STYLE OF TRELLIS.
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00:07:17,310 --> 00:07:21,034
WHEN THE GRAPES RIPEN,
THEY CUT THE CANES.
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00:07:23,206 --> 00:07:27,310
THE FRUIT CONTINUES TO HANG
THERE AND IT DRIES ON THE VINES.
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00:07:27,310 --> 00:07:32,586
AFTER 6 TO 8 WEEKS, THE GRAPES
SHRIVEL UP AND BECOME RAISINS.
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00:07:34,827 --> 00:07:37,137
A HARVESTER WITH COMB-LIKE TEETH
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SHAKES THE RAISINS
FROM THE VINES.
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00:07:44,379 --> 00:07:47,689
THEY FALL ONTO A CONVEYER,
AND A VACUUM PULLS OUT LEAVES
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00:07:47,689 --> 00:07:50,793
AND THEN SHOOTS THE RAISINS
INTO BINS.
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00:07:50,793 --> 00:07:53,172
ON THIS PARTICULAR HARVESTER,
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00:07:53,172 --> 00:07:55,103
THE CONVEYER AND THE BINS
ARE ON BOARD.
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00:07:55,103 --> 00:07:58,620
THE T-TRELLISES REQUIRE
A DIFFERENT HARVESTING SYSTEM,
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00:07:58,620 --> 00:08:01,793
AND THE BINS ARE OUTSIDE
IN THE NEXT ROW.
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00:08:03,103 --> 00:08:05,862
ONCE FULL,
A LOADER RETRIEVES THE BIN,
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00:08:05,862 --> 00:08:09,000
AND THEN IT'S ON ITS WAY
TO THE PACKING PLANT.
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00:08:12,862 --> 00:08:16,862
UPON ARRIVAL, THESE RAISINS
UNDERGO EXTENSIVE SCRUTINY.
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00:08:16,862 --> 00:08:19,655
AN INSPECTOR FROM THE U.S.
DEPARTMENT OF AGRICULTURE
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LOOKS FOR DEFECTS AS THE RAISINS
BOUNCE BY ON A SHAKER CONVEYER.
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00:08:25,482 --> 00:08:27,482
TECHNICIANS ALSO TEST
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00:08:27,482 --> 00:08:31,586
THE MOISTURE CONTENT AND
GENERAL QUALITY OF THE FRUIT.
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00:08:31,586 --> 00:08:33,344
A VACUUM
REMOVES TWIGS AND STEMS.
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00:08:33,344 --> 00:08:35,620
THEY'RE LIGHTER THAN THE RAISINS
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00:08:35,620 --> 00:08:38,206
AND SO THEY
CAN BE EASILY PULLED OUT.
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00:08:38,206 --> 00:08:41,724
HERE'S A SAMPLE OF THE RAISINS
AS THEY ARRIVE FROM THE FIELD.
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00:08:41,724 --> 00:08:45,344
AND HERE THEY ARE
WITH THE PLANT DEBRIS REMOVED.
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00:08:45,344 --> 00:08:49,172
THEY OFTEN STORE THE RAISINS FOR
WEEKS BEFORE FURTHER PRODUCTION.
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00:08:49,172 --> 00:08:51,379
AND DURING THIS TIME,
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00:08:51,379 --> 00:08:54,896
THE RAISINS STICK TOGETHER
AND FORM CLUMPS.
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00:08:54,896 --> 00:08:57,103
A REVOLVING WHEEL WITH PADDLES
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00:08:57,103 --> 00:09:01,862
NOW BREAKS UP THE CLUMPS
AND SEPARATES THE RAISINS.
147
00:09:01,862 --> 00:09:06,068
THEY TUMBLE OFF THE CONVEYER AND
ONTO A PERFORATED SHAKER TABLE.
148
00:09:06,068 --> 00:09:11,241
THIS SEPARATES ANY RAISINS WHICH
MAY STILL BE CLINGING TOGETHER.
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00:09:11,241 --> 00:09:13,241
SOME CAP STEMS REMAIN.
150
00:09:13,241 --> 00:09:16,586
THESE BITS LINK THE GRAPES
TO THE VINE STEMS.
151
00:09:16,586 --> 00:09:19,586
THE RAISINS NOW FLOW
INTO CONE-SHAPED MACHINES
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00:09:19,586 --> 00:09:21,689
THAT SPIN THEM
TO KNOCK OFF THE CAP STEMS
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00:09:21,689 --> 00:09:25,655
WITHOUT DAMAGING THE RAISINS.
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00:09:25,655 --> 00:09:28,172
ONCE THE RAISINS
HAVE BEEN SORTED BY SIZE,
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00:09:28,172 --> 00:09:30,586
THEY TRAVEL UNDER SPRAYERS
FOR A RINSE,
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00:09:30,586 --> 00:09:33,793
WASH, AND THEN ANOTHER RINSE.
157
00:09:35,000 --> 00:09:36,965
THEY CRUISE BY A LASER
THAT DETECTS
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00:09:36,965 --> 00:09:40,068
ANY MISSED CAP STEMS
OR PLANT MATERIAL.
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00:09:40,068 --> 00:09:43,689
A BLAST OF AIR
THEN GETS RID OF THEM.
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00:09:43,689 --> 00:09:47,310
NEXT, THE RAISINS GO
INTO AN INSPECTION STATION
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00:09:47,310 --> 00:09:48,931
AND A WORKER PICKS OUT
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00:09:48,931 --> 00:09:52,000
ANY MATERIAL THAT MAY HAVE BEEN
MISSED BY THE LASER.
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00:09:52,000 --> 00:09:55,896
WITH HER APPROVAL, THE RAISINS
ARE READY FOR PACKAGING.
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00:09:55,896 --> 00:09:59,068
SUCTIONING DEVICES GRAB
AND UNFOLD SNACK-SIZED BOXES
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00:09:59,068 --> 00:10:02,965
AND PLACE THEM, LID UP,
ON A HIGH-SPEED CONVEYER OR.
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00:10:05,206 --> 00:10:07,620
RAISINS SPILL
INTO THE OPEN SNACK BOXES,
167
00:10:07,620 --> 00:10:09,965
AND IT'S ALL A BLUR.
168
00:10:14,482 --> 00:10:18,724
THEY FILL 30,000 SNACK BOXES
AN HOUR AT THIS FACILITY.
169
00:10:24,862 --> 00:10:27,758
IT TAKES ABOUT A YEAR TO GROW
AND DRY THESE RAISINS
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00:10:27,758 --> 00:10:30,620
AND JUST MINUTES
TO PACKAGE THEM.
171
00:10:32,000 --> 00:10:35,586
STORED IN A COOL, DRY PLACE,
THEY WILL LAST A YEAR --
172
00:10:35,586 --> 00:10:37,517
UNLESS SOMEONE EATS THEM FIRST.
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00:10:51,482 --> 00:10:55,965
Narrator: STEREOSCOPIC VIEWERS
DATE BACK TO THE 1840s.
174
00:10:55,965 --> 00:10:59,896
THEN, YOU HAD TO MANUALLY INSERT
ONE PHOTOGRAPH AT A TIME.
175
00:10:59,896 --> 00:11:03,103
IN 1939, A NEW TYPE OF VIEWER
WAS INTRODUCED
176
00:11:03,103 --> 00:11:06,310
WHICH USED A REEL OF SLIDES
INSTEAD OF PRINTED PHOTOGRAPHS.
177
00:11:06,310 --> 00:11:10,655
YOU ADVANCE FROM ONE TO THE NEXT
BY PULLING ON A LEVER.
178
00:11:12,689 --> 00:11:18,551
EARLY STEREOSCOPIC VIEWERS GAVE
PEOPLE A WAY TO SEE THE WORLD.
179
00:11:18,551 --> 00:11:22,655
WHEN VIEWERS WITH REELS CAME
OUT, TRAVEL REMAINED THE FOCUS.
180
00:11:22,655 --> 00:11:24,310
YOU COULD VISIT A TOURIST SITE,
181
00:11:24,310 --> 00:11:27,482
THEN BUY YOURSELF A REEL
AT THE GIFT SHOP AS A SOUVENIR.
182
00:11:27,482 --> 00:11:30,655
TODAY, 3-D VIEWERS
ARE ALSO A BUSINESS TOOL.
183
00:11:30,655 --> 00:11:33,000
COMPANIES USE THEM
AS A CREATIVE WAY
184
00:11:33,000 --> 00:11:36,413
TO MARKET PRODUCTS
OR TRAIN EMPLOYEES.
185
00:11:36,413 --> 00:11:39,724
AND CONSUMERS NOW BUY THEM
AS A NOVELTY OR GIFT,
186
00:11:39,724 --> 00:11:42,172
GOING ONLINE
TO ORDER CUSTOM REELS
187
00:11:42,172 --> 00:11:46,310
FEATURING
THEIR PERSONAL PHOTOGRAPHS.
188
00:11:46,310 --> 00:11:49,448
WHATEVER THE PURPOSE,
IT'S ALL ABOUT THE PICTURES.
189
00:11:49,448 --> 00:11:54,000
THE MANUFACTURER CAN USE PHOTOS
SHOT WITH A 3-D DIGITAL CAMERA
190
00:11:54,000 --> 00:11:56,586
OR WITH
A STANDARD DIGITAL CAMERA.
191
00:12:02,586 --> 00:12:06,275
THE COMPANY'S EDITOR TRANSFERS
THE PHOTOGRAPHS TO A COMPUTER
192
00:12:06,275 --> 00:12:08,448
AND TYPES A CAPTION
FOR EACH ONE.
193
00:12:08,448 --> 00:12:11,413
IF THE PHOTOS WERE TAKEN
WITH THE REGULAR CAMERA,
194
00:12:11,413 --> 00:12:13,344
HE PERFORMS SOME COMPUTER MAGIC.
195
00:12:13,344 --> 00:12:16,793
HE MOVES THE IMAGE BACKWARDS,
AWAY FROM THE VIEWER'S EYES,
196
00:12:16,793 --> 00:12:19,172
THEN FLOATS THE TEXT
IN THE FOREGROUND
197
00:12:19,172 --> 00:12:20,896
CLOSER TO THE VIEWER'S EYES.
198
00:12:20,896 --> 00:12:22,137
THIS LITTLE TRICK
199
00:12:22,137 --> 00:12:24,517
MAKES THE PHOTO
APPEAR TO BE 3-DIMENSIONAL.
200
00:12:24,517 --> 00:12:27,551
HE PUTS TWO OF EACH PHOTO
ON A REEL TEMPLATE.
201
00:12:27,551 --> 00:12:31,344
YOU VIEW ONE WITH EACH EYE AND
YOUR BRAIN COMBINES THE TWO,
202
00:12:31,344 --> 00:12:34,931
CREATING 3-DIMENSIONAL DEPTH.
203
00:12:34,931 --> 00:12:38,000
A PHOTO AND TITLE IN THE CENTER
IDENTIFY THE REEL.
204
00:12:38,000 --> 00:12:41,310
THEN THE EDITOR SENDS
THE ASSEMBLED REEL FILE
205
00:12:41,310 --> 00:12:43,206
TO A PHOTO PROCESSING LAB
206
00:12:43,206 --> 00:12:48,655
AND SETS UP THE NUMBER OF COPIES
TO BE PRINTED.
207
00:12:48,655 --> 00:12:50,206
THE PHOTO PROCESSOR'S LASERS
208
00:12:50,206 --> 00:12:53,724
PRINT THE PHOTOGRAPHS PIXEL
BY PIXEL ON POLYESTER FILM.
209
00:12:53,724 --> 00:12:57,206
THE MACHINE PRINTS
A FULL SHEET OF 35 REELS
210
00:12:57,206 --> 00:13:00,172
IN EXACTLY
1 MINUTE AND 14 SECONDS.
211
00:13:00,172 --> 00:13:01,793
THEN THE SHEET TRAVELS
212
00:13:01,793 --> 00:13:04,517
THROUGH A SERIES
OF CHEMICAL BATHS AND A DRYER.
213
00:13:04,517 --> 00:13:08,379
AND 11 1/2 MINUTES LATER,
THE FILM IS READY.
214
00:13:11,413 --> 00:13:16,379
THE EDITOR CAREFULLY INSPECTS
EVERY PHOTO ON EVERY REEL.
215
00:13:19,931 --> 00:13:21,482
IF EVERYTHING'S PERFECT,
216
00:13:21,482 --> 00:13:23,965
HE FEEDS THE FILM
THROUGH A LAMINATOR.
217
00:13:23,965 --> 00:13:25,896
THE MACHINE SANDWICHES THE FILM
218
00:13:25,896 --> 00:13:28,551
BETWEEN TWO SHEETS
OF TRANSPARENT PLASTIC
219
00:13:28,551 --> 00:13:31,379
THEN USES
SIMULTANEOUS PRESSURE AND HEAT
220
00:13:31,379 --> 00:13:33,517
TO FUSE EVERYTHING TOGETHER.
221
00:13:33,517 --> 00:13:35,413
ENCASED IN PLASTIC,
222
00:13:35,413 --> 00:13:39,896
THE FLOPPY FILM IS NOW RIGID
AND THREE TIMES THICKER.
223
00:13:44,034 --> 00:13:46,586
THEY NOW FEED THE LAMINATED FILM
224
00:13:46,586 --> 00:13:48,931
INTO A HYDRAULIC
PUNCHING MACHINE.
225
00:13:48,931 --> 00:13:50,689
ITS COOKIE-CUTTER TYPE DIES
226
00:13:50,689 --> 00:13:52,586
SLICE THE PERIMETER
OF THE REELS,
227
00:13:52,586 --> 00:13:54,379
RELEASING THEM FROM THE SHEET.
228
00:14:07,586 --> 00:14:11,241
THE VIEWER ITSELF IS MADE UP
OF INJECTION-MOLDED PLASTIC.
229
00:14:11,241 --> 00:14:15,758
A WORKER SECURES THE FRONT PART
IN AN ASSEMBLY FIXTURE
230
00:14:15,758 --> 00:14:18,310
THEN PLACES PLASTIC LENSES
IN THE EYEHOLES.
231
00:14:22,241 --> 00:14:27,448
A MACHINE THEN EXPANDS THE
PLASTIC, LOCKING IN THE LENSES.
232
00:14:28,965 --> 00:14:31,655
PREPARING TWO VIEWERS
AT A TIME NOW,
233
00:14:31,655 --> 00:14:34,034
HE PLACES A FROSTED PLASTIC
PANEL ON THE BACK PART
234
00:14:34,034 --> 00:14:37,103
TO DIFFUSE THE DAYLIGHT
OR ARTIFICIAL LIGHT
235
00:14:37,103 --> 00:14:38,758
COMING INTO THE VIEWER.
236
00:14:38,758 --> 00:14:41,655
AN INNER EYEPIECE
GOES OVER THE DIFFUSER,
237
00:14:41,655 --> 00:14:45,413
THEN THIS MACHINE APPLIES HEAT
TO FUSE IT IN PLACE.
238
00:14:48,275 --> 00:14:52,379
NEXT, THE LEVER YOU PULL DOWN
TO ADVANCE FROM PHOTO TO PHOTO.
239
00:14:52,379 --> 00:14:57,137
THIS SPRING RETURNS IT TO THE
"UP" POSITION AFTER EACH PULL.
240
00:14:58,724 --> 00:15:01,931
NOW HE MATES
THE TWO PARTS OF THE VIEWER.
241
00:15:01,931 --> 00:15:04,310
A HIGH-PRESSURE AIR PRESS
242
00:15:04,310 --> 00:15:07,758
SQUEEZES THEM TOGETHER
IN A PERMANENT BOND.
243
00:15:07,758 --> 00:15:10,172
THE FINISHING TOUCH --
A PRINTING PAD
244
00:15:10,172 --> 00:15:13,689
STAMPS THE FRONT OF THE VIEWER
WITH THE BRAND NAME.
245
00:15:17,724 --> 00:15:20,137
STEREOSCOPIC VIEWERS
HAVE COME A LONG WAY
246
00:15:20,137 --> 00:15:22,275
SINCE THEIR INVENTION
IN THE 1800s.
247
00:15:22,275 --> 00:15:24,931
WHILE STILL OFFERING
A DOSE OF NOSTALGIA,
248
00:15:24,931 --> 00:15:26,344
THERE'S A NEW TWIST --
249
00:15:26,344 --> 00:15:29,689
PUTTING YOUR VERY OWN PHOTOS
ON A REEL AS A UNIQUE GIFT
250
00:15:29,689 --> 00:15:33,413
OR A FUN WAY TO RELIVE
THOSE VACATION MEMORIES.
251
00:15:49,551 --> 00:15:53,551
Narrator: THE RIBBON MICROPHONE
WAS INVENTED IN THE 1920s
252
00:15:53,551 --> 00:15:57,172
AND FIRST COMMERCIALLY PRODUCED
IN 1931.
253
00:15:57,172 --> 00:16:00,482
IT'S CALLED A RIBBON MICROPHONE
BECAUSE INSIDE,
254
00:16:00,482 --> 00:16:04,241
A THIN ALUMINUM RIBBON
POSITIONED BETWEEN TWO MAGNETS
255
00:16:04,241 --> 00:16:07,482
CONVERTS SOUND WAVES
INTO ELECTRICAL SIGNALS.
256
00:16:10,896 --> 00:16:14,758
INTRODUCED IN 1931, RIBBON
MICROPHONES REVOLUTIONIZED
257
00:16:14,758 --> 00:16:18,206
THE BROADCASTING AND
AUDIO RECORDING INDUSTRIES
258
00:16:18,206 --> 00:16:20,862
WITH UNPRECEDENTED
SOUND QUALITY.
259
00:16:20,862 --> 00:16:24,965
THIS COMPANY MANUFACTURES
A MODERN VERSION OF THE RCA-44,
260
00:16:24,965 --> 00:16:27,793
ONE OF THE FIRST
RIBBON MICROPHONES.
261
00:16:27,793 --> 00:16:30,862
THIS MANUFACTURER HANDCRAFTS
THE MICROPHONE,
262
00:16:30,862 --> 00:16:34,448
STARTING WITH THE FRAME,
WHICH HOLDS ALL THE COMPONENTS.
263
00:16:34,448 --> 00:16:36,344
AFTER CUTTING
A FLAT PIECE OF BRASS,
264
00:16:36,344 --> 00:16:39,310
THE MACHINIST
MAKES TWO BENDS WITH A PRESS,
265
00:16:39,310 --> 00:16:42,379
THEN DRILLS THREADED HOLES
FOR THE FASTENERS
266
00:16:42,379 --> 00:16:47,551
THAT WILL CONNECT THE FRAME
TO THE REST OF THE MICROPHONE.
267
00:16:47,551 --> 00:16:49,724
THEN HE PUTS THE BAR
INTO ANOTHER PRESS
268
00:16:49,724 --> 00:16:53,827
THAT BENDS THE TWO ENDS UPWARD
TO FORM A U-SHAPE.
269
00:16:53,827 --> 00:16:56,586
THE FRAME GOES OFF
TO ANOTHER DEPARTMENT
270
00:16:56,586 --> 00:16:58,931
TO BE CHROME-PLATED
AND POLISHED.
271
00:16:58,931 --> 00:17:00,310
MEANWHILE,
272
00:17:00,310 --> 00:17:03,000
ANOTHER MACHINIST TAKES
A SHEET OF PERFORATED BRASS
273
00:17:03,000 --> 00:17:06,068
TO BEGIN FORMING THE
MICROPHONE'S SIGNATURE GRILLE.
274
00:17:06,068 --> 00:17:09,379
HE SECURES IT TO A DIE
WITH TWO MOUNTING PLATES.
275
00:17:09,379 --> 00:17:13,896
THE DIE IS THE SHAPE OF ONE HALF
OF THE MULTISIDED GRILLE.
276
00:17:13,896 --> 00:17:15,931
HE MOUNTS IT ONTO A FLY PRESS,
277
00:17:15,931 --> 00:17:19,344
A PRESS OPERATED BY ROTATING
A HEAVY COUNTERWEIGHT.
278
00:17:19,344 --> 00:17:23,482
AS THAT COUNTERWEIGHT SPINS, THE
DIE DESCENDS INTO A FORMING MOLD
279
00:17:23,482 --> 00:17:27,068
THAT'S ALSO IN THE SHAPE
OF HALF OF THE GRILLE.
280
00:17:27,068 --> 00:17:30,482
A HIGH-SPEED AUTOMATED CUTTER
TRIMS THE PERIMETER
281
00:17:30,482 --> 00:17:33,724
TO MAKE A NEAT, EVEN EDGE
ALL AROUND.
282
00:17:35,275 --> 00:17:36,448
THEN THE GRILLE HALVES
283
00:17:36,448 --> 00:17:39,517
ARE SENT OFF TO BE CHROME-PLATED
AND POLISHED.
284
00:17:41,068 --> 00:17:43,068
NEXT, A TECHNICIAN
ASSEMBLES THE MOTOR,
285
00:17:43,068 --> 00:17:45,310
THE HEART OF THE MICROPHONE.
286
00:17:45,310 --> 00:17:48,655
FIRST, HE SNAPS ON
TWO STRONG MAGNETS.
287
00:17:48,655 --> 00:17:49,965
THE GAP BETWEEN THEM
288
00:17:49,965 --> 00:17:52,103
IS WHERE HE'LL LATER INSERT
THE KEY COMPONENT --
289
00:17:52,103 --> 00:17:53,586
THE THIN ALUMINUM RIBBON
290
00:17:53,586 --> 00:17:56,275
WHICH GIVES THIS TYPE
OF MICROPHONE ITS NAME.
291
00:17:56,275 --> 00:17:59,310
AFTER ALIGNING THE TOP
OF THE MOTOR WITH THE BOTTOM,
292
00:17:59,310 --> 00:18:00,793
HE ATTACHES THE FRAME,
293
00:18:00,793 --> 00:18:03,206
WHICH HAS SINCE ACQUIRED
A CUSTOM-MADE TRANSFORMER,
294
00:18:03,206 --> 00:18:06,689
ELECTRICAL TERMINALS,
AND SIDE BRACKETS.
295
00:18:06,689 --> 00:18:08,965
NOW FOR
THE ALL-IMPORTANT RIBBON.
296
00:18:08,965 --> 00:18:10,448
A TECHNICIAN CRAFTS IT
297
00:18:10,448 --> 00:18:13,310
FROM A HAIR-THIN SHEET
OF PURE ALUMINUM.
298
00:18:13,310 --> 00:18:17,655
IT'S SO FRAGILE, HE
HAS TO HANDLE IT WITH TWEEZERS.
299
00:18:17,655 --> 00:18:19,827
FIRST, USING THE EDGE
OF A RAZOR BLADE,
300
00:18:19,827 --> 00:18:22,379
HE GLUES DOWN THE EDGES
TO A THIN SHEET OF PAPER
301
00:18:22,379 --> 00:18:25,758
SET ON A GLASS CUTTING SURFACE.
302
00:18:25,758 --> 00:18:31,172
THEN, HE PLACES A SECOND SHEET
OF PAPER ON TOP
303
00:18:31,172 --> 00:18:34,241
AND, WITH A RAZOR BLADE,
SLICES LENGTHWISE,
304
00:18:34,241 --> 00:18:38,896
DIVIDING IT INTO 4 RIBBONS,
EACH 2/10 OF AN INCH WIDE.
305
00:18:38,896 --> 00:18:41,517
WHEN SOUND WAVES
PASS THROUGH THE MICROPHONE,
306
00:18:41,517 --> 00:18:44,379
THEY CAUSE MINUTE DIFFERENCES
IN AIR PRESSURE
307
00:18:44,379 --> 00:18:47,482
BETWEEN THE FRONT AND THE BACK
OF THE RIBBON INSIDE.
308
00:18:47,482 --> 00:18:49,689
THIS CAUSES THE RIBBON TO MOVE
309
00:18:49,689 --> 00:18:52,758
IN RESPONSE TO THE PEAKS
AND VALLEYS OF THE SOUND WAVE.
310
00:18:52,758 --> 00:18:56,000
THE TECHNICIAN CORRUGATES
THE RIBBON SO THAT IT RESPONDS
311
00:18:56,000 --> 00:18:59,344
TO THIS MINUTE AIR-PRESSURE
CHANGES MORE ACCURATELY.
312
00:18:59,344 --> 00:19:01,620
HE REMOVES THE PROTECTIVE PAPERS
313
00:19:01,620 --> 00:19:05,241
AND INSTALLS THE RIBBON IN THE
MOTOR, BETWEEN THE TWO MAGNETS.
314
00:19:05,241 --> 00:19:06,517
IN THIS POSITION,
315
00:19:06,517 --> 00:19:09,586
THE MOVING RIBBON IS A CONDUCTOR
IN A MAGNETIC FIELD,
316
00:19:09,586 --> 00:19:11,931
GENERATING A TINY CURRENT --
317
00:19:11,931 --> 00:19:13,413
AN ELECTRICAL REPLICA
OF THE SOUND WAVE
318
00:19:13,413 --> 00:19:16,827
THAT CAN RECORDED, AMPLIFIED,
OR BROADCASTED.
319
00:19:16,827 --> 00:19:19,448
A TECHNICIAN TESTS
THE RIBBON'S TENSION
320
00:19:19,448 --> 00:19:22,965
TO ENSURE IT'S NEITHER TOO TIGHT
NOR TOO LOOSE.
321
00:19:22,965 --> 00:19:26,310
HE HOOKS UP THE TERMINALS
TO AN AUDIO SIGNAL GENERATOR
322
00:19:26,310 --> 00:19:28,896
AND MEASURES AT WHAT FREQUENCY
THE RIBBON RESONATES.
323
00:19:28,896 --> 00:19:33,206
IF NECESSARY, HE TUNES THE
RIBBON BY ADJUSTING ITS TENSION.
324
00:19:33,206 --> 00:19:36,275
HE INSTALLS
WHAT'S CALLED A PUFF SHIELD.
325
00:19:36,275 --> 00:19:38,103
IT PREVENTS PUFFS OF AIR
326
00:19:38,103 --> 00:19:41,068
FROM STRETCHING OR TEARING
THE DELICATE RIBBON.
327
00:19:41,068 --> 00:19:43,206
A TWO-PART METAL HOUSING
328
00:19:43,206 --> 00:19:45,413
WILL ENCASE THE LOWER PART
OF THE MOTOR.
329
00:19:45,413 --> 00:19:46,965
HOWEVER, BEFORE ASSEMBLING IT,
330
00:19:46,965 --> 00:19:49,551
A TECHNICIAN GLUES ON
AN EMBOSSED MEDAL MEDALLION
331
00:19:49,551 --> 00:19:53,241
BEARING THE COMPANY'S LOGO.
332
00:19:53,241 --> 00:19:55,000
THEN HE TAKES THE MOTOR,
333
00:19:55,000 --> 00:19:58,068
WHICH BY NOW HAS ACQUIRED
AN OUTPUT CABLE,
334
00:19:58,068 --> 00:20:02,068
STANDS IT UPSIDE DOWN, AND
ASSEMBLES THE HOUSING AROUND IT.
335
00:20:05,620 --> 00:20:07,931
THEN HE TURNS IT RIGHT-SIDE UP
336
00:20:07,931 --> 00:20:10,310
AND ASSEMBLES THE TWO HALVES
OF THE GRILLE.
337
00:20:10,310 --> 00:20:14,206
A SLEEK-LOOKING CHROME-PLATED
BAND HIDES THE JOINT.
338
00:20:18,275 --> 00:20:22,551
HE FASTENS THE MICROPHONE TO
A U-SHAPED STAND CALLED A YOKE.
339
00:20:22,551 --> 00:20:24,379
ON EACH SIDE,
THERE'S A THUMB NUT,
340
00:20:24,379 --> 00:20:25,965
WHICH YOU LOOSEN TO TILT THE MIC
341
00:20:25,965 --> 00:20:29,275
THEN TIGHTEN
TO LOCK THE POSITION.
342
00:20:31,517 --> 00:20:34,758
ALTHOUGH NEWER TECHNOLOGIES
HAVE EMERGED SINCE,
343
00:20:34,758 --> 00:20:38,379
THE CLASSIC RIBBON MICROPHONE
STILL REMAINS A FAVORITE
344
00:20:38,379 --> 00:20:41,241
OF SOUND ENGINEERS
AROUND THE WORLD.
345
00:20:51,241 --> 00:20:53,586
IF YOU HAVE ANY COMMENTS
ABOUT THE SHOW,
346
00:20:53,586 --> 00:20:56,517
OR IF YOU'D LIKE TO SUGGEST
TOPICS FOR FUTURE SHOWS,
347
00:20:56,517 --> 00:20:59,034
DROP US A LINE AT...
28553
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