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These are the user uploaded subtitles that are being translated: 1 00:00:01,734 --> 00:00:04,736 -- Captions by VITAC -- www.vitac.com 2 00:00:04,737 --> 00:00:07,774 CAPTIONS PAID FOR BY DISCOVERY COMMUNICATIONS 3 00:00:52,518 --> 00:00:55,219 Narrator: TO CONTAIN THE SOUNDS OF TRAFFIC, 4 00:00:55,220 --> 00:00:58,690 IT'S OFTEN NECESSARY TO PUT UP A WALL OF SILENCE. 5 00:00:58,691 --> 00:01:01,992 NOISE-BARRIER WALLS BOTH ABSORB TRAFFIC NOISE 6 00:01:01,993 --> 00:01:04,529 AND SHIELD NEIGHBORHOODS FROM IT. 7 00:01:04,530 --> 00:01:07,831 WITH STONE OR BRICK-LIKE TEXTURES ON BOTH SIDES, 8 00:01:07,832 --> 00:01:10,436 THEY EVEN LOOK GOOD ON THE STREET. 9 00:01:14,173 --> 00:01:16,173 IN THE 1970s, 10 00:01:16,174 --> 00:01:19,744 NOISE-BARRIER WALLS WERE MAINLY DRAB CONCRETE. 11 00:01:19,745 --> 00:01:21,545 FAST FORWARD TO TODAY, 12 00:01:21,546 --> 00:01:24,583 AND THE WALLS COME IN A RANGE OF TEXTURES AND DESIGNS 13 00:01:24,584 --> 00:01:26,717 FOR CURB APPEAL. 14 00:01:26,718 --> 00:01:29,286 BUT OF COURSE, IT'S THEIR NOISE-ABSORBING QUALITIES 15 00:01:29,287 --> 00:01:32,357 THAT REALLY IMPROVE THE NEIGHBORHOOD. 16 00:01:32,358 --> 00:01:33,724 THEY'RE MADE FROM A WOOD SHAVING 17 00:01:33,725 --> 00:01:36,093 AND CEMENT MATERIAL THAT'S VERY POROUS, 18 00:01:36,094 --> 00:01:39,730 WHICH ALLOWS THE WALLS TO ABSORB SOUND AND ENTRAP IT. 19 00:01:39,731 --> 00:01:42,467 PRODUCTION STARTS WITH THE RAW SHAVINGS. 20 00:01:42,468 --> 00:01:46,470 A CONVEYOR DELIVERS THEM TO A HAMMER MILL. 21 00:01:46,471 --> 00:01:49,607 INSIDE, ROTATING HAMMERS FORCE THE WOOD SHAVINGS 22 00:01:49,608 --> 00:01:51,811 THROUGH A CUTTING SCREEN. 23 00:01:57,248 --> 00:01:59,551 THIS CARVES THEM INTO SMALLER PARTICLES 24 00:01:59,552 --> 00:02:02,319 OF VARIOUS SIZES. 25 00:02:02,320 --> 00:02:03,988 IT'S THIS COMBINATION OF SIZES 26 00:02:03,989 --> 00:02:06,692 THAT WILL CREATE THE NOISE-ABSORBING PORES 27 00:02:06,693 --> 00:02:08,427 IN THE COMPLETED WALL. 28 00:02:11,396 --> 00:02:14,098 THEY TEST A PROPRIETARY CHEMICAL SOLUTION, 29 00:02:14,099 --> 00:02:16,435 THAT WILL BE USED TO TREAT THE WOOD PARTICLES, 30 00:02:16,436 --> 00:02:19,971 AND CONFIRM IT'S THE RIGHT CONCENTRATION. 31 00:02:19,972 --> 00:02:22,975 AN AUGER THEN MIXES IT INTO THE WOOD PARTICLES 32 00:02:22,976 --> 00:02:25,911 UNTIL THEY'RE DAMP AND THOROUGHLY COATED. 33 00:02:25,912 --> 00:02:27,279 WITHOUT THIS TREATMENT, 34 00:02:27,280 --> 00:02:30,514 THE WOOD PARTICLES WOULDN'T BIND WITH CEMENT. 35 00:02:30,515 --> 00:02:33,418 IT WILL ALSO PROTECT THE WOOD FROM DECAY. 36 00:02:35,487 --> 00:02:38,857 IN ANOTHER MIXER, THEY ADD WATER AND A SECOND CHEMICAL SOLUTION 37 00:02:38,858 --> 00:02:42,328 TO FURTHER ENHANCE THE BINDING PROCESS. 38 00:02:47,500 --> 00:02:50,768 THE WOOD PARTICLES ARE NOW PRIMED AND READY TO BE MIXED 39 00:02:50,769 --> 00:02:56,406 WITH A POWDERED MIX OF LIMESTONE CLAY CALLED PORTLAND CEMENT. 40 00:02:56,407 --> 00:02:58,143 THE MACHINE WORKS THE INGREDIENTS 41 00:02:58,144 --> 00:03:00,444 UNTIL THEY FORM A COHESIVE MATERIAL 42 00:03:00,445 --> 00:03:02,115 THAT CAN BE SHAPED. 43 00:03:08,721 --> 00:03:10,755 THE NEXT WORKER SPRAYS A RELEASE AGENT 44 00:03:10,756 --> 00:03:12,891 ONTO THE STONE-PATTERN LINER. 45 00:03:15,360 --> 00:03:19,496 EACH MOLD WILL FORM ONE NOISE BARRIER PANEL. 46 00:03:19,497 --> 00:03:22,099 THE TEAM TRANSFERS THE WOOD-AND-CEMENT BLEND 47 00:03:22,100 --> 00:03:23,700 INTO THE MOLD. 48 00:03:23,701 --> 00:03:25,136 THEY WORK AT A STEADY PACE 49 00:03:25,137 --> 00:03:28,207 TO FILL IT BEFORE THE MIXTURE BEGINS TO DRY. 50 00:03:33,277 --> 00:03:35,079 ONCE THEY'VE FILLED IT PARTWAY, 51 00:03:35,080 --> 00:03:37,449 THEY LEVEL THE WOOD-CEMENT MATERIAL... 52 00:03:39,551 --> 00:03:42,055 ...THEN COMPACT IT WITH A TAMPING TOOL. 53 00:03:43,855 --> 00:03:46,490 NEXT, THEY ADD A STEEL MESH. 54 00:03:46,491 --> 00:03:48,626 THIS MESH WILL SERVE AS A SKELETON, 55 00:03:48,627 --> 00:03:51,962 ALLOWING THE WALL TO STAND STRONG. 56 00:03:51,963 --> 00:03:55,566 THEY POUR FRESHLY MIXED CONCRETE ONTO THE STEEL MESH. 57 00:03:55,567 --> 00:03:57,102 IT FLOWS THROUGH THE MESH 58 00:03:57,103 --> 00:03:59,871 AND ONTO THE SOUND-ABSORBING MIXTURE BELOW, 59 00:03:59,872 --> 00:04:02,507 BINDING THE TWO LAYERS TOGETHER. 60 00:04:02,508 --> 00:04:05,677 THE WORKER SPREADS THE CONCRETE THROUGHOUT THE MOLD. 61 00:04:07,346 --> 00:04:10,948 HE PIERCES THE SURFACE WITH A VIBRATING TOOL. 62 00:04:10,949 --> 00:04:13,550 THE VIBRATIONS CONSOLIDATE THE CONCRETE 63 00:04:13,551 --> 00:04:15,721 AND ELIMINATE AIR POCKETS. 64 00:04:17,456 --> 00:04:19,090 THE TWO-PERSON TEAM LEVELS 65 00:04:19,091 --> 00:04:22,161 THE CONCRETE LAYER USING A WOOD SCREED. 66 00:04:30,670 --> 00:04:35,239 THEY APPLY A SECOND LAYER OF THE NOISE-ABSORBING MATERIAL 67 00:04:35,240 --> 00:04:37,110 AND LEVEL IT. 68 00:04:46,351 --> 00:04:48,619 THEY LOWER THE STONE-PATTERN PRESS LID, 69 00:04:48,620 --> 00:04:51,990 WHICH WILL MOLD THE PATTERN ONTO THE TOP SIDE OF THE PANEL. 70 00:04:54,526 --> 00:04:57,496 THEY SET A 10-TON CONCRETE BLOCK ON THE MOLD, 71 00:04:57,497 --> 00:04:59,463 AND PRESSURE FORCES THE MOLD PATTERNS 72 00:04:59,464 --> 00:05:01,667 ONTO BOTH SIDES OF THE CASTING. 73 00:05:05,204 --> 00:05:06,804 AFTER A FEW MINUTES, 74 00:05:06,805 --> 00:05:11,441 THEY REMOVE THE LID, AND THE IMPRINT IS REVEALED. 75 00:05:11,442 --> 00:05:14,611 THEY QUICKLY COVER THE PANEL SURFACE WITH A PLASTIC SHEET 76 00:05:14,612 --> 00:05:17,047 TO PREVENT ANY EVAPORATION OF MOISTURE 77 00:05:17,048 --> 00:05:19,249 AS THE CURE CONTINUES. 78 00:05:19,250 --> 00:05:21,219 IF THE BLEND CURES TOO QUICKLY, 79 00:05:21,220 --> 00:05:23,455 IT COULD CRACK. 80 00:05:23,456 --> 00:05:25,890 AFTER ANOTHER DAY, THEY REMOVE THE TARP 81 00:05:25,891 --> 00:05:28,995 AND THEY'RE READY TO EXTRACT THE PANEL FROM THE MOLD. 82 00:05:30,528 --> 00:05:32,129 A CRANE LIFTS THE PANEL 83 00:05:32,130 --> 00:05:35,167 AND SETS IT ASIDE TO CURE FOR ABOUT A MONTH. 84 00:05:39,571 --> 00:05:41,205 BUILT PANEL BY PANEL, 85 00:05:41,206 --> 00:05:45,143 THESE NOISE-BARRIER WALLS CAN BECOME A SUBSTANTIAL FORTRESS, 86 00:05:45,144 --> 00:05:48,747 PROVIDING A SOLID DEFENSE AGAINST NOISE POLLUTION. 87 00:05:58,500 --> 00:05:59,868 Narrator: FRONT-LOADING WASHING MACHINES 88 00:05:59,869 --> 00:06:02,705 USE FAR LESS WATER THAN STANDARD WASHERS. 89 00:06:02,706 --> 00:06:05,539 THEY'RE GENTLER ON CLOTHES BECAUSE THERE'S NO AGITATOR 90 00:06:05,540 --> 00:06:07,775 IN THE MIDDLE OF THE DRUM. 91 00:06:07,776 --> 00:06:09,277 THE SPIN SPEED IS USUALLY 92 00:06:09,278 --> 00:06:12,780 ABOUT 20 PERCENT FASTER THAN THE STANDARD TOP-LOAD MACHINE, 93 00:06:12,781 --> 00:06:15,584 SO THE CLOTHES COME OUT OF THE WASH DRIER. 94 00:06:19,120 --> 00:06:22,756 WITH GRAVITY HELPING TUMBLE THE LAUNDRY, A FRONT-LOAD WASHER 95 00:06:22,757 --> 00:06:26,693 IS GENTLER ON THE CLOTHES WHILE USING LESS WATER. 96 00:06:26,694 --> 00:06:30,498 ITS DESIGN CAN ALSO ACCOMMODATE A LARGER-CAPACITY DRUM, 97 00:06:30,499 --> 00:06:32,767 SO YOU CAN DO BIGGER LOADS. 98 00:06:32,768 --> 00:06:35,303 THE WASHER'S CABINET IS MADE OF STEEL. 99 00:06:35,304 --> 00:06:38,674 A WASHING MACHINE IS ROUTINELY EXPOSED TO MOISTURE, 100 00:06:38,675 --> 00:06:43,044 SO THEY USE GALVANIZED STEEL, WHICH DOESN'T RUST. 101 00:06:43,045 --> 00:06:46,246 THE CABINET BASE IS COMPRISED OF FOUR PIECES, 102 00:06:46,247 --> 00:06:49,017 WHICH, TOGETHER, PROVIDE MORE STRUCTURAL STRENGTH 103 00:06:49,018 --> 00:06:50,652 THAN A SINGLE PIECE WOULD. 104 00:06:50,653 --> 00:06:54,323 AT THE CORNERS, WORKERS INSTALL FOUR SCREW-IN RUBBER FEET 105 00:06:54,324 --> 00:06:55,924 WHICH ARE HEIGHT-ADJUSTABLE. 106 00:06:55,925 --> 00:06:59,361 THIS ALLOWS THE WASHER TO LEVEL ON AN UNEVEN FLOOR. 107 00:06:59,362 --> 00:07:01,530 NEXT ARE THE TWO SIDE PANELS. 108 00:07:01,531 --> 00:07:04,799 THEY ARE ALREADY STAMPED TO THE REQUIRED SHAPE IN A PRESS 109 00:07:04,800 --> 00:07:07,034 AND COATED WITH BAKED-ON PAINT. 110 00:07:07,035 --> 00:07:10,571 THIS AUTOMATED MACHINE INSTALLS BRACKETS ON THE INNER SIDE 111 00:07:10,572 --> 00:07:11,640 FOR MOUNTING COMPONENTS 112 00:07:11,641 --> 00:07:13,073 LATER ON. 113 00:07:13,074 --> 00:07:15,842 THE NEXT AUTOMATED MACHINE ATTACHES THE SIDE PANELS 114 00:07:15,843 --> 00:07:17,479 TO THE CABINET. 115 00:07:17,480 --> 00:07:19,246 RATHER THAN WELDING THE EDGES, 116 00:07:19,247 --> 00:07:21,114 WHICH WOULD RUIN THE PAINT FINISH, 117 00:07:21,115 --> 00:07:22,450 THE MACHINE'S PUNCH TOOLS 118 00:07:22,451 --> 00:07:25,285 MECHANICALLY LOCK THEM TO THE BASE. 119 00:07:25,286 --> 00:07:29,725 A ROBOT THEN TRANSFERS THE CABINET TO THE ASSEMBLY LINE. 120 00:07:30,893 --> 00:07:32,895 HERE, WORKERS CONNECT THE SIDE PANELS 121 00:07:32,896 --> 00:07:35,729 WITH A STRUCTURAL SUPPORT BRACKET AND POWER CORD, 122 00:07:35,730 --> 00:07:37,599 ALREADY INSTALLED ON IT. 123 00:07:37,600 --> 00:07:39,267 WORKERS PREPARE THE REAR PORTION 124 00:07:39,268 --> 00:07:41,904 OF THE MACHINE'S TWO-PIECE PLASTIC TUB. 125 00:07:41,905 --> 00:07:45,873 FIRST, A ROBOT MOUNTS A STEEL BEARING ON A PRESS. 126 00:07:45,874 --> 00:07:47,575 THE PRESS THEN FORCES THE BEARING 127 00:07:47,576 --> 00:07:51,114 INTO A HOLE AT THE BOTTOM OF THE INSIDE OF THE TUB. 128 00:07:51,115 --> 00:07:55,316 THEN THE PROCESS IS REPEATED BUT ON THE OUTSIDE OF THE TUB. 129 00:07:55,317 --> 00:07:58,385 THIS PAIR OF BEARINGS SEALS THE HOLE TO PREVENT LEAKS, 130 00:07:58,386 --> 00:08:02,057 AND ENABLES THE STAINLESS-STEEL WASH DRUM TO SPIN. 131 00:08:04,059 --> 00:08:06,361 TO COUNTERBALANCE THE SPINNING LOAD, 132 00:08:06,362 --> 00:08:09,198 THEY WEIGHT THE FRONT OF THE DRUM WITH A PLASTIC RING, 133 00:08:09,199 --> 00:08:13,534 CONTAINING HEAVY STEEL BALLS SUSPENDED IN FLUID. 134 00:08:13,535 --> 00:08:16,070 THEN, THEY INSERT THE SHAFT AT THE BASE OF THE DRUM 135 00:08:16,071 --> 00:08:17,838 INTO THE TUB'S BEARINGS 136 00:08:17,839 --> 00:08:20,308 AND COVER THE TOP OF THE DRUM WITH THE FRONT SECTION 137 00:08:20,309 --> 00:08:21,609 OF THE TUB. 138 00:08:21,610 --> 00:08:24,412 IT HAS A RUBBER GASKET CALLED A BELLOW. 139 00:08:24,413 --> 00:08:28,583 THE BELLOW FORMS A LEAK-PROOF SEAL AROUND THE DRUM. 140 00:08:28,584 --> 00:08:30,919 AFTER WELDING THE TUB SECTIONS TOGETHER, 141 00:08:30,920 --> 00:08:33,688 THEY MOUNT THE WASHER'S MOTOR TO THE REAR. 142 00:08:33,689 --> 00:08:37,293 IN THIS STATOR-ROTOR MOTOR, THE ELECTRIC CURRENT TRAVELS 143 00:08:37,294 --> 00:08:40,227 THROUGH THE COILED COPPER WIRES OF THE MOTOR'S STATOR, 144 00:08:40,228 --> 00:08:43,363 GENERATING PULSES OF ELECTRICITY. 145 00:08:43,364 --> 00:08:46,901 THOSE PULSES PUSH ON MAGNETS LINING THE MOTOR'S ROTOR, 146 00:08:46,902 --> 00:08:49,069 POSITIONED ON TOP. 147 00:08:49,070 --> 00:08:51,038 THE MAGNETS REPEL THE PULSES, 148 00:08:51,039 --> 00:08:52,841 AND THIS REPEATED PULSE REPELLING 149 00:08:52,842 --> 00:08:57,344 DRIVES THE DRUM IN THE DIRECTION AND SPEED REQUIRED. 150 00:08:57,345 --> 00:09:01,616 NEXT, THEY INSTALL A DRAIN HOSE ON THE SIDE OF THE TUB 151 00:09:01,617 --> 00:09:03,920 AND ATTACH IT WITH A RETAINER CLIP. 152 00:09:05,987 --> 00:09:09,491 THEY BOLT A PIECE OF CONCRETE TO EITHER SIDE OF THE DRUM OPENING 153 00:09:09,492 --> 00:09:12,894 TO COUNTERBALANCE THE WEIGHT OF THE MOTOR ON THE BACK. 154 00:09:12,895 --> 00:09:16,432 THEN, THEY TURN THE NOW-COMPLETE WASH UNIT ON ITS SIDE 155 00:09:16,433 --> 00:09:18,634 AND INSTALL IT IN THE CABINET. 156 00:09:21,936 --> 00:09:25,640 NEXT, THEY MOUNT THE DRAIN PUMP IN THE CABINET BASE 157 00:09:25,641 --> 00:09:27,541 AND CONNECT ITS WIRING. 158 00:09:27,542 --> 00:09:31,813 THE PUMP'S JOB IS TO REMOVE DIRTY WATER FROM THE TUB. 159 00:09:33,681 --> 00:09:35,784 FOUR SHOCK ABSORBERS ARE INSTALLED 160 00:09:35,785 --> 00:09:39,520 BETWEEN THE BOTTOM OF THE WASH UNIT AND THE BASE. 161 00:09:39,521 --> 00:09:42,424 THESE LARGE PISTONS DAMPEN MUCH OF THE VIBRATION 162 00:09:42,425 --> 00:09:44,861 DURING THE WASH AND SPIN CYCLES. 163 00:09:46,261 --> 00:09:47,929 NEXT, THE FRONT PANEL. 164 00:09:47,930 --> 00:09:50,398 LIKE THE SIDES, IT'S MADE OF A STAMPED SHEET 165 00:09:50,399 --> 00:09:53,770 OF GALVANIZED STEEL WITH A BAKED-ON PAINT FINISH. 166 00:09:55,304 --> 00:09:57,172 THEY INSTALL AND CONNECT THE CONSOLE, 167 00:09:57,173 --> 00:10:00,209 WHICH HOUSES THE MACHINE'S CENTRAL CONTROL MODULE. 168 00:10:03,145 --> 00:10:06,414 THEY PULL THE BELLOW ON THE DRUM ALL AROUND THE FRONT OPENING 169 00:10:06,415 --> 00:10:08,251 TO SEAL THE PERIMETER. 170 00:10:12,220 --> 00:10:16,058 THEY SECURE IT IN PLACE WITH A WIRE RETAINER CLIP. 171 00:10:21,030 --> 00:10:24,299 THE HINGED DOOR HAS A SEE-THROUGH PLASTIC WINDOW. 172 00:10:24,300 --> 00:10:26,735 LIKE THE REST OF THE MACHINE'S METAL PARTS, 173 00:10:26,736 --> 00:10:29,404 THE DOOR PANEL AND HARDWARE ATTACHING IT 174 00:10:29,405 --> 00:10:33,107 ARE ALSO MADE OF GALVANIZED STEEL. 175 00:10:33,108 --> 00:10:35,544 THE BACK PANEL IS LEFT UNPAINTED. 176 00:10:35,545 --> 00:10:38,111 AFTER FEEDING THE POWER CORD THROUGH ITS HOLE, 177 00:10:38,112 --> 00:10:42,116 WORKERS SCREW THE PANEL TO THE REST OF THE CABINET. 178 00:10:42,117 --> 00:10:44,819 THEN, THEY COMPLETE THE CABINET WITH THE TOP PANEL, 179 00:10:44,820 --> 00:10:47,290 WHICH HAS THE BAKED-ON PAINT FINISH. 180 00:10:49,090 --> 00:10:50,625 THE FRONT-LOAD WASHING MACHINE 181 00:10:50,626 --> 00:10:54,731 IS NOW ALL SET AND READY FOR ITS FIRST LOAD. 182 00:11:03,500 --> 00:11:05,500 Narrator: BOURBON WHISKEY IS UNIQUELY AMERICAN. 183 00:11:05,501 --> 00:11:08,138 THE U.S. CONGRESS OFFICIALLY RECOGNIZED IT 184 00:11:08,139 --> 00:11:10,239 AS A PRODUCT DISTINCT TO THE NATION. 185 00:11:10,240 --> 00:11:12,675 THIS AMBER-HUED BREW WAS FIRST COOKED UP 186 00:11:12,676 --> 00:11:17,245 BY SCOTTISH AND IRISH SETTLERS IN LATE 18th CENTURY KENTUCKY. 187 00:11:17,246 --> 00:11:19,514 TODAY, PRODUCTION CONTINUES THERE 188 00:11:19,515 --> 00:11:21,651 WITH THE APPROVAL OF CONGRESS. 189 00:11:23,787 --> 00:11:27,089 THE AMERICAN GOVERNMENT REGULATES THE MAKING OF BOURBON 190 00:11:27,090 --> 00:11:30,725 TO KEEP THIS NATIVE SPIRIT TRUE TO TRADITION. 191 00:11:30,726 --> 00:11:32,528 BY LAW, IT MUST BE MADE 192 00:11:32,529 --> 00:11:36,566 FROM A GRAIN MIX THAT'S AT LEAST 51% CORN. 193 00:11:36,567 --> 00:11:40,536 DISTILLERS OFTEN USE MORE FOR FLAVOR. 194 00:11:40,537 --> 00:11:43,940 SHAKERS SIFT OUT COBS OR OTHER FOREIGN MATERIAL, 195 00:11:43,941 --> 00:11:47,241 AND THE KERNELS HEAD INTO A GRINDER. 196 00:11:47,242 --> 00:11:49,811 INSIDE, ROLLERS CRUSH THE KERNELS 197 00:11:49,812 --> 00:11:52,447 TO RELEASE THE FLAVOR OF THE STARCH. 198 00:11:52,448 --> 00:11:56,552 THE PROCESS LEAVES LARGER CHUNKS OF THE CORN GERM AND HUSKS. 199 00:11:56,553 --> 00:11:59,756 ONCE DISTILLED, THESE BITS WILL SETTLE OUT. 200 00:12:01,692 --> 00:12:03,725 IN SEPARATE BATCHES, THE MACHINE 201 00:12:03,726 --> 00:12:08,466 ALSO GRINDS MALTED BARLEY AND SOFT RED WINTER WHEAT. 202 00:12:09,865 --> 00:12:11,533 THEY COOK THE CORN AND BLEND IT 203 00:12:11,534 --> 00:12:15,604 WITH LIMESTONE-RICH, IRON-FREE KENTUCKY WATER. 204 00:12:15,605 --> 00:12:17,807 THEY ADD THE BARLEY, WINTER WHEAT, 205 00:12:17,808 --> 00:12:20,744 AND A BIT OF MASH FROM A PREVIOUS BATCH. 206 00:12:22,779 --> 00:12:26,081 ALONG WITH A SPECIAL YEAST FORMULATION, THE GRAIN MASH 207 00:12:26,082 --> 00:12:29,320 FLOWS INTO FERMENTATION TANKS MADE OF CYPRESS WOOD. 208 00:12:31,788 --> 00:12:35,390 AFTER 8 TO 10 HOURS, THE YEAST WORKS ITS MAGIC 209 00:12:35,391 --> 00:12:38,695 AND THE MASH BECOMES A BUBBLING BREW. 210 00:12:40,929 --> 00:12:42,197 THE BUBBLING IS CAUSED 211 00:12:42,198 --> 00:12:44,801 BY THE RELEASE OF CARBON-DIOXIDE GAS 212 00:12:44,802 --> 00:12:48,803 AS THE GRAIN SUGARS FERMENT AND BECOME ALCOHOL. 213 00:12:48,804 --> 00:12:50,138 AFTER THREE DAYS, 214 00:12:50,139 --> 00:12:52,008 IT HAS FERMENTED INTO A THICK LIQUID 215 00:12:52,009 --> 00:12:54,144 THEY CALL 'DISTILLER'S BEER." 216 00:12:55,812 --> 00:12:59,983 THEY PUMP IT INTO A COLUMN STILL WHICH BOILS OFF THE ALCOHOL, 217 00:12:59,984 --> 00:13:03,118 LEAVING WATER AND OTHER SUBSTANCES BEHIND. 218 00:13:03,119 --> 00:13:06,656 THE ALCOHOLIC VAPOR RISES UP TO BE CONDENSED INTO LIQUID. 219 00:13:06,657 --> 00:13:09,691 AFTER DISTILLING IT A SECOND TIME, 220 00:13:09,692 --> 00:13:14,431 THE ALCOHOL CONCENTRATION RISES TO A STRONG 130 PROOF. 221 00:13:17,833 --> 00:13:20,869 IT'S CLEAR, WITH NO NOTICEABLE COLOR. 222 00:13:20,870 --> 00:13:23,374 AT THIS STAGE, THEY CALL IT "WHITE DOG." 223 00:13:24,573 --> 00:13:26,975 ONCE WATER HAS BEEN ADDED TO DILUTE THE WHISKEY 224 00:13:26,976 --> 00:13:28,911 TO 110 PROOF, 225 00:13:28,912 --> 00:13:33,648 AN EMPLOYEE TAKES A SAMPLE AND SENDS IT TO THE LAB. 226 00:13:33,649 --> 00:13:37,085 THERE, A TECHNICIAN PLACES A TEST TUBE OF THE ALCOHOL 227 00:13:37,086 --> 00:13:39,990 INTO A GAS CHROMATOGRAPH TESTER. 228 00:13:42,625 --> 00:13:44,560 IT VAPORIZES THE ALCOHOL 229 00:13:44,561 --> 00:13:48,632 AND THEN ANALYZES THE FLAVOR COMPOUNDS AND ALCOHOL STRENGTH. 230 00:13:50,534 --> 00:13:52,500 WITH APPROVAL FROM THE LAB, 231 00:13:52,501 --> 00:13:55,772 THEY'RE READY TO BARREL THE BATCH. 232 00:13:55,773 --> 00:13:58,807 THEY PUMP IT OUT OF STORAGE TANKS AND INTO NEW OAK BARRELS 233 00:13:58,808 --> 00:14:03,211 THAT HAVE BEEN PURPOSELY CHARRED ON THE INSIDE. 234 00:14:03,212 --> 00:14:06,282 CHARRING CARAMELIZES NATURALLY OCCURRING WOOD SUGARS 235 00:14:06,283 --> 00:14:10,752 TO ADD SWEETNESS TO THE ALCOHOL AS IT AGES. 236 00:14:10,753 --> 00:14:14,391 IT WILL ALSO TURN THE CLEAR ALCOHOL AN AMBER COLOR. 237 00:14:17,994 --> 00:14:20,495 ONCE CORKED WITH A WALNUT STOPPER, 238 00:14:20,496 --> 00:14:25,701 THE EMPLOYEE ROLLS THE BARREL INTO A MULTI-TIERED WAREHOUSE. 239 00:14:25,702 --> 00:14:28,604 HERE, THE BOURBON WILL AGE FOR MANY YEARS. 240 00:14:28,605 --> 00:14:30,004 PARTWAY THROUGH, 241 00:14:30,005 --> 00:14:32,207 THEY'LL MOVE THE BARREL TO ANOTHER LEVEL OF THE BUILDING 242 00:14:32,208 --> 00:14:34,777 DUE TO TEMPERATURE VARIATIONS. 243 00:14:34,778 --> 00:14:38,513 THIS WILL MAKE THE PRODUCT MORE CONSISTENT. 244 00:14:38,514 --> 00:14:40,682 AFTER SIX TO SEVEN YEARS, 245 00:14:40,683 --> 00:14:43,786 THEY UNCORK THE STOPPER AND INSERT STEEL TUBES 246 00:14:43,787 --> 00:14:46,023 TO DRAW IN AMBIENT AIR. 247 00:14:47,724 --> 00:14:50,828 THIS CAUSES THE BOURBON TO FLOW FREELY WHEN TIPPED, 248 00:14:50,829 --> 00:14:53,762 AND IT GUSHES INTO A TROUGH. 249 00:14:53,763 --> 00:14:58,035 THE ALCOHOL HAS RIPENED TO A SWEET CARAMEL-COLORED BREW. 250 00:15:00,737 --> 00:15:03,706 AFTER THEY ADD MORE WATER TO MAKE IT 90 PROOF, 251 00:15:03,707 --> 00:15:06,240 IT'S READY FOR BOTTLING. 252 00:15:06,241 --> 00:15:09,646 NOZZLES FILL THE BOTTLES WITH BOURBON RIGHT TO THE NECK. 253 00:15:12,715 --> 00:15:17,318 THE BOTTLES THEN CIRCLE OVER TO THE CAP APPLICATORS. 254 00:15:17,319 --> 00:15:21,924 THE APPLICATORS SPIN METAL CAPS, SCREWING THEM ONTO THE BOTTLES. 255 00:15:23,827 --> 00:15:25,760 THE BOTTLES THEN RIDE A CAROUSEL 256 00:15:25,761 --> 00:15:29,297 AND A DEVICE PICKS UP AND APPLIES THE LABELS. 257 00:15:29,298 --> 00:15:32,269 A BRUSH SMOOTHES THEM TO THE BOTTLES. 258 00:15:34,505 --> 00:15:36,938 DOWN THE LINE, A TWO-PERSON TEAM 259 00:15:36,939 --> 00:15:41,842 RETRIEVES THE BOTTLES AND DIPS THE CAPS IN HOT WAX. 260 00:15:41,843 --> 00:15:45,013 THE WAX QUICKLY DRIES AND SOLIDIFIES TO GIVE THE BOURBON 261 00:15:45,014 --> 00:15:46,884 A BETTER SEAL. 262 00:15:49,686 --> 00:15:52,155 AFTER SEVERAL YEARS IN THE DISTILLERY, 263 00:15:52,156 --> 00:15:55,358 THIS KENTUCKY BOURBON HAS COME OF AGE, 264 00:15:55,359 --> 00:15:57,861 AND THAT CALLS FOR A TOAST. 265 00:16:08,639 --> 00:16:10,572 Narrator: THE CIRCUIT BOARD 266 00:16:10,573 --> 00:16:12,707 IS WHERE THE ELECTRONIC COMPONENTS ARE LOCATED, 267 00:16:12,708 --> 00:16:14,676 ALONG WITH THE ELECTRICAL CONNECTIONS WHICH POWER THEM. 268 00:16:14,677 --> 00:16:17,180 IN A LARGER DEVICE, SUCH AS A COMPUTER, 269 00:16:17,181 --> 00:16:19,181 THE CIRCUIT BOARD IS TYPICALLY RIGID. 270 00:16:19,182 --> 00:16:21,850 WHEN THE DEVICE IS COMPACT, LIKE A SMALL CAMERA, 271 00:16:21,851 --> 00:16:24,186 THE CIRCUIT BOARD MUST BE FLEXIBLE. 272 00:16:24,187 --> 00:16:26,789 IT NEEDS TO FOLD TO FIT INSIDE. 273 00:16:28,423 --> 00:16:31,460 FLEXIBLE CIRCUIT BOARDS ARE SO THIN AND PLIABLE, 274 00:16:31,461 --> 00:16:33,895 THEY'RE NICKNAMED ORIGAMI CIRCUITRY, 275 00:16:33,896 --> 00:16:37,398 AFTER THE JAPANESE ART OF PAPER FOLDING. 276 00:16:37,399 --> 00:16:41,036 AT THE CORE OF THE BOARDS IS A HAIR-THIN POLYMER FILM 277 00:16:41,037 --> 00:16:43,574 THAT'S BOTH BENDABLE AND HEAT RESISTANT. 278 00:16:43,575 --> 00:16:47,842 THE MANUFACTURER PRODUCES THIS MATERIAL FOR SEVERAL INDUSTRIES. 279 00:16:47,843 --> 00:16:49,946 IN THIS CASE, THEY CUT ROLLS OF IT 280 00:16:49,947 --> 00:16:53,616 TO THE WIDTH REQUIRED FOR MAKING FLEXIBLE CIRCUIT BOARDS. 281 00:16:55,851 --> 00:16:59,720 WITH A RIGID SHEET OF PAPER LENDING SUPPORT FROM UNDERNEATH, 282 00:16:59,721 --> 00:17:01,289 THE FILM ENTERS A MACHINE 283 00:17:01,290 --> 00:17:04,626 WHICH SANDWICHES IT BETWEEN TWO THIN SHEETS OF COPPER. 284 00:17:04,627 --> 00:17:06,494 A CUTTER THEN SLICES THE SANDWICH 285 00:17:06,495 --> 00:17:08,664 INTO RECTANGULAR SHEETS. 286 00:17:08,665 --> 00:17:11,000 A CUSHION OF AIR PUMPED THROUGH THE CONVEYOR BELT 287 00:17:11,001 --> 00:17:14,237 LITERALLY FLOATS SHEET AFTER SHEET OFF THE MACHINE 288 00:17:14,238 --> 00:17:17,439 AND INTO A STACK. 289 00:17:17,440 --> 00:17:20,176 EACH THREE-LAYER SHEET IS SEPARATED FROM THE NEXT 290 00:17:20,177 --> 00:17:23,911 BY THE SUPPORT PAPER CALLED A LAMINATE. 291 00:17:23,912 --> 00:17:27,617 THE FILM AT THE CENTER HAS A HEAT-ACTIVATED ADHESIVE COATING, 292 00:17:27,618 --> 00:17:29,652 WHILE THE ADJOINING COPPER SURFACES 293 00:17:29,653 --> 00:17:33,254 HAVE BEEN CHEMICALLY ROUGHENED TO ENHANCE ADHESION. 294 00:17:33,255 --> 00:17:36,559 AFTER DRAWING THE LAYERS TIGHTLY TOGETHER WITH A VACUUM, 295 00:17:36,560 --> 00:17:38,127 WORKERS PLACE THE LAMINATES 296 00:17:38,128 --> 00:17:40,529 IN A HIGH-TEMPERATURE, HIGH-PRESSURE CHAMBER 297 00:17:40,530 --> 00:17:42,365 FOR SEVERAL HOURS. 298 00:17:42,366 --> 00:17:46,334 THIS ACTIVATES THE ADHESIVE, BONDING THE LAYERS. 299 00:17:46,335 --> 00:17:48,137 TO TEST THE BOND STRENGTH, 300 00:17:48,138 --> 00:17:51,441 THEY BURN SOME ADHESIVE OFF A SAMPLE OF FINISHED LAMINATE 301 00:17:51,442 --> 00:17:54,510 TO PRY APART THE LAYERED EDGE. 302 00:17:54,511 --> 00:17:58,013 THEN, THEY GRAB THE TOP COPPER LAYER WITH THIS PULLING DEVICE 303 00:17:58,014 --> 00:18:00,015 AND MEASURE THE STRENGTH REQUIRED TO PEEL 304 00:18:00,016 --> 00:18:02,051 IT OFF THE FILM. 305 00:18:02,052 --> 00:18:05,254 THE LAMINATE'S NOW SHIPPED TO A CIRCUIT BOARD FACTORY. 306 00:18:05,255 --> 00:18:07,188 HERE, COMPUTER-GUIDED MACHINES 307 00:18:07,189 --> 00:18:09,390 CUT THEM INTO SPECIFIC-SIZED PANELS 308 00:18:09,391 --> 00:18:11,126 AND DRILL TINY HOLES FOR MOUNTING 309 00:18:11,127 --> 00:18:13,130 THE ELECTRONIC COMPONENTS. 310 00:18:14,597 --> 00:18:15,798 THEN A COATING MACHINE 311 00:18:15,799 --> 00:18:18,567 USES A COMBINATION OF HEAT AND PRESSURE 312 00:18:18,568 --> 00:18:22,404 TO APPLY A LIGHT-SENSITIVE FLUID TO THE PANEL'S SURFACE. 313 00:18:22,405 --> 00:18:25,773 TECHNICIANS LOAD THE PANEL INTO AN EXPOSURE MACHINE, 314 00:18:25,774 --> 00:18:29,378 IN WHICH A COMPUTER-GUIDED LASER SCANS THE CIRCUITRY PATTERN 315 00:18:29,379 --> 00:18:31,179 ONTO THE CODED SURFACE. 316 00:18:31,180 --> 00:18:33,681 A LASER IS A BEAM OF FOCUSED LIGHT, 317 00:18:33,682 --> 00:18:38,052 SO WHEREVER IT HITS, THE FLUID REACTS AND HARDENS. 318 00:18:38,053 --> 00:18:42,357 THE DARK AREAS OF UNEXPOSED FLUID REMAIN SOFT. 319 00:18:42,358 --> 00:18:45,895 THE NEXT MACHINE ACID-WASHES THE SOFT AREAS, 320 00:18:45,896 --> 00:18:47,495 REMOVING BOTH THE FLUID 321 00:18:47,496 --> 00:18:49,430 AND THE COPPER LAYER UNDERNEATH IT. 322 00:18:49,431 --> 00:18:52,935 NOW THE ONLY COPPER REMAINING ON TOP OF THE POLYMER FILM 323 00:18:52,936 --> 00:18:55,436 IS IN THE CIRCUITRY PATTERN. 324 00:18:55,437 --> 00:18:56,772 THIS INSPECTION DEVICE 325 00:18:56,773 --> 00:19:00,577 METICULOUSLY CHECKS EVERY SINGLE COPPER CIRCUIT. 326 00:19:01,910 --> 00:19:05,613 NEXT, THEY REMOVE SURFACE DUST WITH A STICKY ROLLER. 327 00:19:05,614 --> 00:19:07,181 THE PANEL MUST BE PRISTINE 328 00:19:07,182 --> 00:19:10,052 BEFORE RECEIVING THE SHEET OF ELECTRICAL INSULATION, 329 00:19:10,053 --> 00:19:14,823 A MERE .25 OF A MILLIMETER THICK. 330 00:19:14,824 --> 00:19:16,725 TECHNICIANS USE A MAGNIFIER 331 00:19:16,726 --> 00:19:19,395 TO CAREFULLY MATCH UP ALIGNMENT HOLES ON THE FILM 332 00:19:19,396 --> 00:19:22,432 WITH CORRESPONDING ALIGNMENT HOLES ON THE PANEL. 333 00:19:22,433 --> 00:19:24,866 BY ACTIVATING THE FILM'S BUILT-IN ADHESIVE 334 00:19:24,867 --> 00:19:26,435 WITH A SOLDERING IRON, 335 00:19:26,436 --> 00:19:31,039 THEY TACK THE INSULATION TO THE PANEL AT KEY SPOTS. 336 00:19:31,040 --> 00:19:33,675 THE NEXT STEP IS TO FULLY LAMINATE THE INSULATION 337 00:19:33,676 --> 00:19:34,975 TO THE PANEL. 338 00:19:34,976 --> 00:19:36,712 TECHNICIANS SANDWICH TWO PANELS 339 00:19:36,713 --> 00:19:40,048 AT A TIME BETWEEN SHEETS OF PROTECTIVE PLASTIC. 340 00:19:40,049 --> 00:19:42,585 THIS PROTECTS THE SURFACES FROM THE HEAT AND WEIGHT 341 00:19:42,586 --> 00:19:44,919 OF THE LAMINATION PRESS. 342 00:19:44,920 --> 00:19:48,322 AS IT FORCES THE INSULATION FILM DEEP DOWN ONTO THE PANEL, 343 00:19:48,323 --> 00:19:51,560 IT ENCAPSULATES THE CIRCUITRY. 344 00:19:51,561 --> 00:19:54,096 THEY LOAD THE PANELS INTO THE LAMINATION PRESS, 345 00:19:54,097 --> 00:19:57,666 APPLY A VACUUM TO REMOVE THE AIR BETWEEN THE LAYERS 346 00:19:57,667 --> 00:19:59,735 AND START HER UP. 347 00:19:59,736 --> 00:20:01,771 FOR THE NEXT HOUR AND A HALF, 348 00:20:01,772 --> 00:20:04,941 THE PRESS SIMULTANEOUSLY APPLIES HIGH PRESSURE 349 00:20:04,942 --> 00:20:09,377 WHILE HEATING THE PANELS TO 400 DEGREES FAHRENHEIT. 350 00:20:09,378 --> 00:20:12,513 WHEN THE PANELS COOL AND COME OUT OF THE PRESS, 351 00:20:12,514 --> 00:20:17,752 TECHNICIANS PLACE ONE AT A TIME ON A CIRCUIT BOARD-SHAPED DYE. 352 00:20:17,753 --> 00:20:19,522 THEN THEY RELEASE A PRESS 353 00:20:19,523 --> 00:20:22,224 WHICH FORCES THE PANEL ONTO THE SHARP DYE, 354 00:20:22,225 --> 00:20:25,526 SLICING AWAY THE EXCESS MATERIAL. 355 00:20:25,527 --> 00:20:28,463 THE FLEXIBLE CIRCUIT BOARD IS NOW READY FOR THE COMPANY 356 00:20:28,464 --> 00:20:31,301 THAT INSTALLS THE ELECTRONIC COMPONENTS. 357 00:20:34,570 --> 00:20:37,205 THERE ARE TWO WAYS TO MOUNT COMPONENTS -- 358 00:20:37,206 --> 00:20:39,975 SOLDER THEM DIRECTLY ONTO THE BOARD'S SURFACE 359 00:20:39,976 --> 00:20:41,677 OR SOLDER TINY PRONGS 360 00:20:41,678 --> 00:20:43,846 UNDERNEATH THE COMPONENTS, KNOWN AS LEADS, 361 00:20:43,847 --> 00:20:46,281 INTO THE BOARD'S MOUNTING HOLES. 362 00:20:46,282 --> 00:20:47,648 A FLEXIBLE CIRCUIT BOARD 363 00:20:47,649 --> 00:20:50,386 CAN HAVE AS FEW AS A DOZEN COMPONENTS 364 00:20:50,387 --> 00:20:53,154 OR AS MANY AS 500. 365 00:20:53,155 --> 00:20:54,423 TECHNICIANS CAN SOLDER 366 00:20:54,424 --> 00:20:58,126 LARGER ONES MAGNIFIED UNDER A MICROSCOPE, 367 00:20:58,127 --> 00:21:01,129 BUT ONLY ROBOTS CAN SOLDER SMALLER ONES 368 00:21:01,130 --> 00:21:02,831 BECAUSE THEY'RE SO TINY 369 00:21:02,832 --> 00:21:05,534 AND BARELY VISIBLE TO THE HUMAN EYE. 370 00:21:13,275 --> 00:21:15,777 IF YOU HAVE ANY COMMENTS ABOUT THE SHOW 371 00:21:15,778 --> 00:21:18,914 OR IF YOU'D LIKE TO SUGGEST TOPICS FOR FUTURE SHOWS, 372 00:21:18,915 --> 00:21:24,321 DROP US A LINE AT sciencechannel.com/howitsmade. 29991

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