-- Captions by VITAC -- www.vitac.com
CAPTIONS PAID FOR BY DISCOVERY COMMUNICATIONS
Narrator: TO CONTAIN THE SOUNDS OF TRAFFIC,
IT'S OFTEN NECESSARY TO PUT UP A WALL OF SILENCE.
NOISE-BARRIER WALLS BOTH ABSORB TRAFFIC NOISE
AND SHIELD NEIGHBORHOODS FROM IT.
WITH STONE OR BRICK-LIKE TEXTURES ON BOTH SIDES,
THEY EVEN LOOK GOOD ON THE STREET.
IN THE 1970s,
NOISE-BARRIER WALLS WERE MAINLY DRAB CONCRETE.
FAST FORWARD TO TODAY,
AND THE WALLS COME IN A RANGE OF TEXTURES AND DESIGNS
FOR CURB APPEAL.
BUT OF COURSE, IT'S THEIR NOISE-ABSORBING QUALITIES
THAT REALLY IMPROVE THE NEIGHBORHOOD.
THEY'RE MADE FROM A WOOD SHAVING
AND CEMENT MATERIAL THAT'S VERY POROUS,
WHICH ALLOWS THE WALLS TO ABSORB SOUND AND ENTRAP IT.
PRODUCTION STARTS WITH THE RAW SHAVINGS.
A CONVEYOR DELIVERS THEM TO A HAMMER MILL.
INSIDE, ROTATING HAMMERS FORCE THE WOOD SHAVINGS
THROUGH A CUTTING SCREEN.
THIS CARVES THEM INTO SMALLER PARTICLES
OF VARIOUS SIZES.
IT'S THIS COMBINATION OF SIZES
THAT WILL CREATE THE NOISE-ABSORBING PORES
IN THE COMPLETED WALL.
THEY TEST A PROPRIETARY CHEMICAL SOLUTION,
THAT WILL BE USED TO TREAT THE WOOD PARTICLES,
AND CONFIRM IT'S THE RIGHT CONCENTRATION.
AN AUGER THEN MIXES IT INTO THE WOOD PARTICLES
UNTIL THEY'RE DAMP AND THOROUGHLY COATED.
WITHOUT THIS TREATMENT,
THE WOOD PARTICLES WOULDN'T BIND WITH CEMENT.
IT WILL ALSO PROTECT THE WOOD FROM DECAY.
IN ANOTHER MIXER, THEY ADD WATER AND A SECOND CHEMICAL SOLUTION
TO FURTHER ENHANCE THE BINDING PROCESS.
THE WOOD PARTICLES ARE NOW PRIMED AND READY TO BE MIXED
WITH A POWDERED MIX OF LIMESTONE CLAY CALLED PORTLAND CEMENT.
THE MACHINE WORKS THE INGREDIENTS
UNTIL THEY FORM A COHESIVE MATERIAL
THAT CAN BE SHAPED.
THE NEXT WORKER SPRAYS A RELEASE AGENT
ONTO THE STONE-PATTERN LINER.
EACH MOLD WILL FORM ONE NOISE BARRIER PANEL.
THE TEAM TRANSFERS THE WOOD-AND-CEMENT BLEND
INTO THE MOLD.
THEY WORK AT A STEADY PACE
TO FILL IT BEFORE THE MIXTURE BEGINS TO DRY.
ONCE THEY'VE FILLED IT PARTWAY,
THEY LEVEL THE WOOD-CEMENT MATERIAL...
...THEN COMPACT IT WITH A TAMPING TOOL.
NEXT, THEY ADD A STEEL MESH.
THIS MESH WILL SERVE AS A SKELETON,
ALLOWING THE WALL TO STAND STRONG.
THEY POUR FRESHLY MIXED CONCRETE ONTO THE STEEL MESH.
IT FLOWS THROUGH THE MESH
AND ONTO THE SOUND-ABSORBING MIXTURE BELOW,
BINDING THE TWO LAYERS TOGETHER.
THE WORKER SPREADS THE CONCRETE THROUGHOUT THE MOLD.
HE PIERCES THE SURFACE WITH A VIBRATING TOOL.
THE VIBRATIONS CONSOLIDATE THE CONCRETE
AND ELIMINATE AIR POCKETS.
THE TWO-PERSON TEAM LEVELS
THE CONCRETE LAYER USING A WOOD SCREED.
THEY APPLY A SECOND LAYER OF THE NOISE-ABSORBING MATERIAL
AND LEVEL IT.
THEY LOWER THE STONE-PATTERN PRESS LID,
WHICH WILL MOLD THE PATTERN ONTO THE TOP SIDE OF THE PANEL.
THEY SET A 10-TON CONCRETE BLOCK ON THE MOLD,
AND PRESSURE FORCES THE MOLD PATTERNS
ONTO BOTH SIDES OF THE CASTING.
AFTER A FEW MINUTES,
THEY REMOVE THE LID, AND THE IMPRINT IS REVEALED.
THEY QUICKLY COVER THE PANEL SURFACE WITH A PLASTIC SHEET
TO PREVENT ANY EVAPORATION OF MOISTURE
AS THE CURE CONTINUES.
IF THE BLEND CURES TOO QUICKLY,
IT COULD CRACK.
AFTER ANOTHER DAY, THEY REMOVE THE TARP
AND THEY'RE READY TO EXTRACT THE PANEL FROM THE MOLD.
A CRANE LIFTS THE PANEL
AND SETS IT ASIDE TO CURE FOR ABOUT A MONTH.
BUILT PANEL BY PANEL,
THESE NOISE-BARRIER WALLS CAN BECOME A SUBSTANTIAL FORTRESS,
PROVIDING A SOLID DEFENSE AGAINST NOISE POLLUTION.
Narrator: FRONT-LOADING WASHING MACHINES
USE FAR LESS WATER THAN STANDARD WASHERS.
THEY'RE GENTLER ON CLOTHES BECAUSE THERE'S NO AGITATOR
IN THE MIDDLE OF THE DRUM.
THE SPIN SPEED IS USUALLY
ABOUT 20 PERCENT FASTER THAN THE STANDARD TOP-LOAD MACHINE,
SO THE CLOTHES COME OUT OF THE WASH DRIER.
WITH GRAVITY HELPING TUMBLE THE LAUNDRY, A FRONT-LOAD WASHER
IS GENTLER ON THE CLOTHES WHILE USING LESS WATER.
ITS DESIGN CAN ALSO ACCOMMODATE A LARGER-CAPACITY DRUM,
SO YOU CAN DO BIGGER LOADS.
THE WASHER'S CABINET IS MADE OF STEEL.
A WASHING MACHINE IS ROUTINELY EXPOSED TO MOISTURE,
SO THEY USE GALVANIZED STEEL, WHICH DOESN'T RUST.
THE CABINET BASE IS COMPRISED OF FOUR PIECES,
WHICH, TOGETHER, PROVIDE MORE STRUCTURAL STRENGTH
THAN A SINGLE PIECE WOULD.
AT THE CORNERS, WORKERS INSTALL FOUR SCREW-IN RUBBER FEET
WHICH ARE HEIGHT-ADJUSTABLE.
THIS ALLOWS THE WASHER TO LEVEL ON AN UNEVEN FLOOR.
NEXT ARE THE TWO SIDE PANELS.
THEY ARE ALREADY STAMPED TO THE REQUIRED SHAPE IN A PRESS
AND COATED WITH BAKED-ON PAINT.
THIS AUTOMATED MACHINE INSTALLS BRACKETS ON THE INNER SIDE
FOR MOUNTING COMPONENTS
LATER ON.
THE NEXT AUTOMATED MACHINE ATTACHES THE SIDE PANELS
TO THE CABINET.
RATHER THAN WELDING THE EDGES,
WHICH WOULD RUIN THE PAINT FINISH,
THE MACHINE'S PUNCH TOOLS
MECHANICALLY LOCK THEM TO THE BASE.
A ROBOT THEN TRANSFERS THE CABINET TO THE ASSEMBLY LINE.
HERE, WORKERS CONNECT THE SIDE PANELS
WITH A STRUCTURAL SUPPORT BRACKET AND POWER CORD,
ALREADY INSTALLED ON IT.
WORKERS PREPARE THE REAR PORTION
OF THE MACHINE'S TWO-PIECE PLASTIC TUB.
FIRST, A ROBOT MOUNTS A STEEL BEARING ON A PRESS.
THE PRESS THEN FORCES THE BEARING
INTO A HOLE AT THE BOTTOM OF THE INSIDE OF THE TUB.
THEN THE PROCESS IS REPEATED BUT ON THE OUTSIDE OF THE TUB.
THIS PAIR OF BEARINGS SEALS THE HOLE TO PREVENT LEAKS,
AND ENABLES THE STAINLESS-STEEL WASH DRUM TO SPIN.
TO COUNTERBALANCE THE SPINNING LOAD,
THEY WEIGHT THE FRONT OF THE DRUM WITH A PLASTIC RING,
CONTAINING HEAVY STEEL BALLS SUSPENDED IN FLUID.
THEN, THEY INSERT THE SHAFT AT THE BASE OF THE DRUM
INTO THE TUB'S BEARINGS
AND COVER THE TOP OF THE DRUM WITH THE FRONT SECTION
OF THE TUB.
IT HAS A RUBBER GASKET CALLED A BELLOW.
THE BELLOW FORMS A LEAK-PROOF SEAL AROUND THE DRUM.
AFTER WELDING THE TUB SECTIONS TOGETHER,
THEY MOUNT THE WASHER'S MOTOR TO THE REAR.
IN THIS STATOR-ROTOR MOTOR, THE ELECTRIC CURRENT TRAVELS
THROUGH THE COILED COPPER WIRES OF THE MOTOR'S STATOR,
GENERATING PULSES OF ELECTRICITY.
THOSE PULSES PUSH ON MAGNETS LINING THE MOTOR'S ROTOR,
POSITIONED ON TOP.
THE MAGNETS REPEL THE PULSES,
AND THIS REPEATED PULSE REPELLING
DRIVES THE DRUM IN THE DIRECTION AND SPEED REQUIRED.
NEXT, THEY INSTALL A DRAIN HOSE ON THE SIDE OF THE TUB
AND ATTACH IT WITH A RETAINER CLIP.
THEY BOLT A PIECE OF CONCRETE TO EITHER SIDE OF THE DRUM OPENING
TO COUNTERBALANCE THE WEIGHT OF THE MOTOR ON THE BACK.
THEN, THEY TURN THE NOW-COMPLETE WASH UNIT ON ITS SIDE
AND INSTALL IT IN THE CABINET.
NEXT, THEY MOUNT THE DRAIN PUMP IN THE CABINET BASE
AND CONNECT ITS WIRING.
THE PUMP'S JOB IS TO REMOVE DIRTY WATER FROM THE TUB.
FOUR SHOCK ABSORBERS ARE INSTALLED
BETWEEN THE BOTTOM OF THE WASH UNIT AND THE BASE.
THESE LARGE PISTONS DAMPEN MUCH OF THE VIBRATION
DURING THE WASH AND SPIN CYCLES.
NEXT, THE FRONT PANEL.
LIKE THE SIDES, IT'S MADE OF A STAMPED SHEET
OF GALVANIZED STEEL WITH A BAKED-ON PAINT FINISH.
THEY INSTALL AND CONNECT THE CONSOLE,
WHICH HOUSES THE MACHINE'S CENTRAL CONTROL MODULE.
THEY PULL THE BELLOW ON THE DRUM ALL AROUND THE FRONT OPENING
TO SEAL THE PERIMETER.
THEY SECURE IT IN PLACE WITH A WIRE RETAINER CLIP.
THE HINGED DOOR HAS A SEE-THROUGH PLASTIC WINDOW.
LIKE THE REST OF THE MACHINE'S METAL PARTS,
THE DOOR PANEL AND HARDWARE ATTACHING IT
ARE ALSO MADE OF GALVANIZED STEEL.
THE BACK PANEL IS LEFT UNPAINTED.
AFTER FEEDING THE POWER CORD THROUGH ITS HOLE,
WORKERS SCREW THE PANEL TO THE REST OF THE CABINET.
THEN, THEY COMPLETE THE CABINET WITH THE TOP PANEL,
WHICH HAS THE BAKED-ON PAINT FINISH.
THE FRONT-LOAD WASHING MACHINE
IS NOW ALL SET AND READY FOR ITS FIRST LOAD.
Narrator: BOURBON WHISKEY IS UNIQUELY AMERICAN.
THE U.S. CONGRESS OFFICIALLY RECOGNIZED IT
AS A PRODUCT DISTINCT TO THE NATION.
THIS AMBER-HUED BREW WAS FIRST COOKED UP
BY SCOTTISH AND IRISH SETTLERS IN LATE 18th CENTURY KENTUCKY.
TODAY, PRODUCTION CONTINUES THERE
WITH THE APPROVAL OF CONGRESS.
THE AMERICAN GOVERNMENT REGULATES THE MAKING OF BOURBON
TO KEEP THIS NATIVE SPIRIT TRUE TO TRADITION.
BY LAW, IT MUST BE MADE
FROM A GRAIN MIX THAT'S AT LEAST 51% CORN.
DISTILLERS OFTEN USE MORE FOR FLAVOR.
SHAKERS SIFT OUT COBS OR OTHER FOREIGN MATERIAL,
AND THE KERNELS HEAD INTO A GRINDER.
INSIDE, ROLLERS CRUSH THE KERNELS
TO RELEASE THE FLAVOR OF THE STARCH.
THE PROCESS LEAVES LARGER CHUNKS OF THE CORN GERM AND HUSKS.
ONCE DISTILLED, THESE BITS WILL SETTLE OUT.
IN SEPARATE BATCHES, THE MACHINE
ALSO GRINDS MALTED BARLEY AND SOFT RED WINTER WHEAT.
THEY COOK THE CORN AND BLEND IT
WITH LIMESTONE-RICH, IRON-FREE KENTUCKY WATER.
THEY ADD THE BARLEY, WINTER WHEAT,
AND A BIT OF MASH FROM A PREVIOUS BATCH.
ALONG WITH A SPECIAL YEAST FORMULATION, THE GRAIN MASH
FLOWS INTO FERMENTATION TANKS MADE OF CYPRESS WOOD.
AFTER 8 TO 10 HOURS, THE YEAST WORKS ITS MAGIC
AND THE MASH BECOMES A BUBBLING BREW.
THE BUBBLING IS CAUSED
BY THE RELEASE OF CARBON-DIOXIDE GAS
AS THE GRAIN SUGARS FERMENT AND BECOME ALCOHOL.
AFTER THREE DAYS,
IT HAS FERMENTED INTO A THICK LIQUID
THEY CALL 'DISTILLER'S BEER."
THEY PUMP IT INTO A COLUMN STILL WHICH BOILS OFF THE ALCOHOL,
LEAVING WATER AND OTHER SUBSTANCES BEHIND.
THE ALCOHOLIC VAPOR RISES UP TO BE CONDENSED INTO LIQUID.
AFTER DISTILLING IT A SECOND TIME,
THE ALCOHOL CONCENTRATION RISES TO A STRONG 130 PROOF.
IT'S CLEAR, WITH NO NOTICEABLE COLOR.
AT THIS STAGE, THEY CALL IT "WHITE DOG."
ONCE WATER HAS BEEN ADDED TO DILUTE THE WHISKEY
TO 110 PROOF,
AN EMPLOYEE TAKES A SAMPLE AND SENDS IT TO THE LAB.
THERE, A TECHNICIAN PLACES A TEST TUBE OF THE ALCOHOL
INTO A GAS CHROMATOGRAPH TESTER.
IT VAPORIZES THE ALCOHOL
AND THEN ANALYZES THE FLAVOR COMPOUNDS AND ALCOHOL STRENGTH.
WITH APPROVAL FROM THE LAB,
THEY'RE READY TO BARREL THE BATCH.
THEY PUMP IT OUT OF STORAGE TANKS AND INTO NEW OAK BARRELS
THAT HAVE BEEN PURPOSELY CHARRED ON THE INSIDE.
CHARRING CARAMELIZES NATURALLY OCCURRING WOOD SUGARS
TO ADD SWEETNESS TO THE ALCOHOL AS IT AGES.
IT WILL ALSO TURN THE CLEAR ALCOHOL AN AMBER COLOR.
ONCE CORKED WITH A WALNUT STOPPER,
THE EMPLOYEE ROLLS THE BARREL INTO A MULTI-TIERED WAREHOUSE.
HERE, THE BOURBON WILL AGE FOR MANY YEARS.
PARTWAY THROUGH,
THEY'LL MOVE THE BARREL TO ANOTHER LEVEL OF THE BUILDING
DUE TO TEMPERATURE VARIATIONS.
THIS WILL MAKE THE PRODUCT MORE CONSISTENT.
AFTER SIX TO SEVEN YEARS,
THEY UNCORK THE STOPPER AND INSERT STEEL TUBES
TO DRAW IN AMBIENT AIR.
THIS CAUSES THE BOURBON TO FLOW FREELY WHEN TIPPED,
AND IT GUSHES INTO A TROUGH.
THE ALCOHOL HAS RIPENED TO A SWEET CARAMEL-COLORED BREW.
AFTER THEY ADD MORE WATER TO MAKE IT 90 PROOF,
IT'S READY FOR BOTTLING.
NOZZLES FILL THE BOTTLES WITH BOURBON RIGHT TO THE NECK.
THE BOTTLES THEN CIRCLE OVER TO THE CAP APPLICATORS.
THE APPLICATORS SPIN METAL CAPS, SCREWING THEM ONTO THE BOTTLES.
THE BOTTLES THEN RIDE A CAROUSEL
AND A DEVICE PICKS UP AND APPLIES THE LABELS.
A BRUSH SMOOTHES THEM TO THE BOTTLES.
DOWN THE LINE, A TWO-PERSON TEAM
RETRIEVES THE BOTTLES AND DIPS THE CAPS IN HOT WAX.
THE WAX QUICKLY DRIES AND SOLIDIFIES TO GIVE THE BOURBON
A BETTER SEAL.
AFTER SEVERAL YEARS IN THE DISTILLERY,
THIS KENTUCKY BOURBON HAS COME OF AGE,
AND THAT CALLS FOR A TOAST.
Narrator: THE CIRCUIT BOARD
IS WHERE THE ELECTRONIC COMPONENTS ARE LOCATED,
ALONG WITH THE ELECTRICAL CONNECTIONS WHICH POWER THEM.
IN A LARGER DEVICE, SUCH AS A COMPUTER,
THE CIRCUIT BOARD IS TYPICALLY RIGID.
WHEN THE DEVICE IS COMPACT, LIKE A SMALL CAMERA,
THE CIRCUIT BOARD MUST BE FLEXIBLE.
IT NEEDS TO FOLD TO FIT INSIDE.
FLEXIBLE CIRCUIT BOARDS ARE SO THIN AND PLIABLE,
THEY'RE NICKNAMED ORIGAMI CIRCUITRY,
AFTER THE JAPANESE ART OF PAPER FOLDING.
AT THE CORE OF THE BOARDS IS A HAIR-THIN POLYMER FILM
THAT'S BOTH BENDABLE AND HEAT RESISTANT.
THE MANUFACTURER PRODUCES THIS MATERIAL FOR SEVERAL INDUSTRIES.
IN THIS CASE, THEY CUT ROLLS OF IT
TO THE WIDTH REQUIRED FOR MAKING FLEXIBLE CIRCUIT BOARDS.
WITH A RIGID SHEET OF PAPER LENDING SUPPORT FROM UNDERNEATH,
THE FILM ENTERS A MACHINE
WHICH SANDWICHES IT BETWEEN TWO THIN SHEETS OF COPPER.
A CUTTER THEN SLICES THE SANDWICH
INTO RECTANGULAR SHEETS.
A CUSHION OF AIR PUMPED THROUGH THE CONVEYOR BELT
LITERALLY FLOATS SHEET AFTER SHEET OFF THE MACHINE
AND INTO A STACK.
EACH THREE-LAYER SHEET IS SEPARATED FROM THE NEXT
BY THE SUPPORT PAPER CALLED A LAMINATE.
THE FILM AT THE CENTER HAS A HEAT-ACTIVATED ADHESIVE COATING,
WHILE THE ADJOINING COPPER SURFACES
HAVE BEEN CHEMICALLY ROUGHENED TO ENHANCE ADHESION.
AFTER DRAWING THE LAYERS TIGHTLY TOGETHER WITH A VACUUM,
WORKERS PLACE THE LAMINATES
IN A HIGH-TEMPERATURE, HIGH-PRESSURE CHAMBER
FOR SEVERAL HOURS.
THIS ACTIVATES THE ADHESIVE, BONDING THE LAYERS.
TO TEST THE BOND STRENGTH,
THEY BURN SOME ADHESIVE OFF A SAMPLE OF FINISHED LAMINATE
TO PRY APART THE LAYERED EDGE.
THEN, THEY GRAB THE TOP COPPER LAYER WITH THIS PULLING DEVICE
AND MEASURE THE STRENGTH REQUIRED TO PEEL
IT OFF THE FILM.
THE LAMINATE'S NOW SHIPPED TO A CIRCUIT BOARD FACTORY.
HERE, COMPUTER-GUIDED MACHINES
CUT THEM INTO SPECIFIC-SIZED PANELS
AND DRILL TINY HOLES FOR MOUNTING
THE ELECTRONIC COMPONENTS.
THEN A COATING MACHINE
USES A COMBINATION OF HEAT AND PRESSURE
TO APPLY A LIGHT-SENSITIVE FLUID TO THE PANEL'S SURFACE.
TECHNICIANS LOAD THE PANEL INTO AN EXPOSURE MACHINE,
IN WHICH A COMPUTER-GUIDED LASER SCANS THE CIRCUITRY PATTERN
ONTO THE CODED SURFACE.
A LASER IS A BEAM OF FOCUSED LIGHT,
SO WHEREVER IT HITS, THE FLUID REACTS AND HARDENS.
THE DARK AREAS OF UNEXPOSED FLUID REMAIN SOFT.
THE NEXT MACHINE ACID-WASHES THE SOFT AREAS,
REMOVING BOTH THE FLUID
AND THE COPPER LAYER UNDERNEATH IT.
NOW THE ONLY COPPER REMAINING ON TOP OF THE POLYMER FILM
IS IN THE CIRCUITRY PATTERN.
THIS INSPECTION DEVICE
METICULOUSLY CHECKS EVERY SINGLE COPPER CIRCUIT.
NEXT, THEY REMOVE SURFACE DUST WITH A STICKY ROLLER.
THE PANEL MUST BE PRISTINE
BEFORE RECEIVING THE SHEET OF ELECTRICAL INSULATION,
A MERE .25 OF A MILLIMETER THICK.
TECHNICIANS USE A MAGNIFIER
TO CAREFULLY MATCH UP ALIGNMENT HOLES ON THE FILM
WITH CORRESPONDING ALIGNMENT HOLES ON THE PANEL.
BY ACTIVATING THE FILM'S BUILT-IN ADHESIVE
WITH A SOLDERING IRON,
THEY TACK THE INSULATION TO THE PANEL AT KEY SPOTS.
THE NEXT STEP IS TO FULLY LAMINATE THE INSULATION
TO THE PANEL.
TECHNICIANS SANDWICH TWO PANELS
AT A TIME BETWEEN SHEETS OF PROTECTIVE PLASTIC.
THIS PROTECTS THE SURFACES FROM THE HEAT AND WEIGHT
OF THE LAMINATION PRESS.
AS IT FORCES THE INSULATION FILM DEEP DOWN ONTO THE PANEL,
IT ENCAPSULATES THE CIRCUITRY.
THEY LOAD THE PANELS INTO THE LAMINATION PRESS,
APPLY A VACUUM TO REMOVE THE AIR BETWEEN THE LAYERS
AND START HER UP.
FOR THE NEXT HOUR AND A HALF,
THE PRESS SIMULTANEOUSLY APPLIES HIGH PRESSURE
WHILE HEATING THE PANELS TO 400 DEGREES FAHRENHEIT.
WHEN THE PANELS COOL AND COME OUT OF THE PRESS,
TECHNICIANS PLACE ONE AT A TIME ON A CIRCUIT BOARD-SHAPED DYE.
THEN THEY RELEASE A PRESS
WHICH FORCES THE PANEL ONTO THE SHARP DYE,
SLICING AWAY THE EXCESS MATERIAL.
THE FLEXIBLE CIRCUIT BOARD IS NOW READY FOR THE COMPANY
THAT INSTALLS THE ELECTRONIC COMPONENTS.
THERE ARE TWO WAYS TO MOUNT COMPONENTS --
SOLDER THEM DIRECTLY ONTO THE BOARD'S SURFACE
OR SOLDER TINY PRONGS
UNDERNEATH THE COMPONENTS, KNOWN AS LEADS,
INTO THE BOARD'S MOUNTING HOLES.
A FLEXIBLE CIRCUIT BOARD
CAN HAVE AS FEW AS A DOZEN COMPONENTS
OR AS MANY AS 500.
TECHNICIANS CAN SOLDER
LARGER ONES MAGNIFIED UNDER A MICROSCOPE,
BUT ONLY ROBOTS CAN SOLDER SMALLER ONES
BECAUSE THEY'RE SO TINY
AND BARELY VISIBLE TO THE HUMAN EYE.
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