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HOW IT WORKS | Fluorescent light, Garden tools, Toxic Waste, Nappies | Episode 32 | Free Documentary

  • 🎬 Video
  • ℹ️ Description
The show that reveals how extraordinary items in our world are designed, constructed and produced. Engineering, technologies and big ideas that make the world go round.
Find out "How it Works"

How it Works - Episode 32
Fluorescent lights: If every UK home replaced 3 normal light bulbs with energy saving bulbs, we'd save enough power to light our streets for a whole year.
Garden tools: The world's largest garden spade is over 3 metres high and weighs almost 45 kilograms ... and it's made in Britain.
Toxic waste disposal: Scientist have found bacteria that consume toxic waste. Called BAV1, they eat vinyl chloride, a chemical used to make paper and plastic.
Nappies: On average, a baby will use 5000 disposible nappies during its life. This means UK babies are going through 9 million every single day.

💬 Comments on the video
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I hope mercury guy gets paid a pretty penny for that job

Author — PrimeAlex35

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I thought that was so cool how they used water to cut and sound to clean with the shovels!!! 🤯

Author — Plain Jane

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They seem to have found the only factory that has so much human intervention for garden tools...

Author — TheMudyOne

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What happens in case of seismic activity? They paid a terrible price at Fukushima Japan when the tsunami inundated the nuclear plant .What about a nappy for a runny nose ?

Author — Rex T

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Funny how they keep saying that heating up the steel hardens it lmao

Author — BIG D'S GARAGE

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Nappies (I think he said) vs diapers. It’s cool to learn what other countries call many different items.

Author — Brett B.

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Interesting use of the word "engineer". More of a "blacksmith" than engineer.

Author — Jeffrey Clark

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A glass factory is great to work in is a place where if you break it you don't buy it

Author — MsJinkerson

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There's optional replacement LED tubes for the 77VAC ballast tubes that plugs streight in. I recommend a simple rewire of 110VAC to either end of the tube and REMOVAL of the ballast. LABEL the light fixture for LED lamps.

Author — Calvin Hoe

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In Canada and the U.S., it's all stamped out in one piece and shaped and tempered

Author — MsJinkerson

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So, the filaments, more specifically, Cathodes, are the electrodes of the fluorescent lamp. They are coated in a mixture of different tri-oxides of different rare earth elements. The selective mixture, when heated wia/ the filament, takes the incandescent energy from the filament and uses it to emit electrons into the tube. These free electrons fly from one end to the other. Hense why the tube has two cathodes at each end. Since the common AC power supply is the sinusoidal wave, it plunges half of its cycle into the negative and half of the cycle into the positive half-cycle. This so called duty-cycle is what causes the tube to flicker and produce light. When the wave is at negative interval, the electrons stop flowing and the phosphor coating for a short period becomes dark. Then when the wave is at positive interval the one cathode start producing the electrons and they flow to the other ends of the tube. This is what causes the tube to flicker, the dark period of the phosphor and the lit period of the phosphor happens so fast that it produces the famous almost-unnoticeable flicker in these tubes. Basically, you can say, that with AC wave, the tube acts like a single diode rectifier, witch means it only lets power one way, and not the other, and hense it flickers. On the electronic ballasts the tubes are driven on DC witch is pine single positive interval wave, the tube is constantly lit and doesn't produce any flicker.
The free electrons traveling at the speed of light trough the tube bombards the free flowing atoms of mercury vapor. When they do, the mercury atoms absorb that energy and the electrons dissapears from existence. The now super charged mercury atom now can't contain all its electrons going fast around the neutrons and protons, and some of the electrons leaves the atom orbit and they appear as UV radiation. This radiation is the invisible spectrum of ultra violet light. It travels trough the tube until it hits the phosphor particles. The phosphor absorbs this radiation and in the process of absorption it produces the light photon in the transformation of the energy absorbed. Now the photon leaves the tube and travels to light our room. This is the invisible dance that happens in every fluorescent tube to make it light up.

Author — Mr.DahliaKing.

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If left above ground it can contaminate water BUT you bring it underground? Closer to the groundwater?

Author — Wanderlust Spirit

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Did anyone notice the hard core guy stick welding without gloves on.... he must have been the boss just doing one for demonstration... if you weld without gloves for just 30 min or so you would be burned up

Author — Phatt Jay

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"Radiation is invisibe" - not the point

Author — Deipatrous

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According to the narrator this garden tool factory only has engineers lol, rather blue collars only actually...

Author — lo2740

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The guy welding the socket to the spade is missing a glove I think...

Author — BarneySaysHi

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It says how it works, but in reality is how it's made

Author — chemisax

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GAH!!!! HE IS NOT HARDENING he is softening. you cannot HARDEN with heat >.<

Author — Rhyuza

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we should try more to recycle toxic waste than store it could come back to bite us in the ass

Author — MsJinkerson

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That's a shear, not a guillotine @9:58

Author — Stan Ervin