How does a heat powered electric stove fan work? Semiconductors and heat - GCSE and A Level Physics

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I saw this amazing heat electrical fan which works using the heat from the stove to cause electrons to be excited so that they can flow between two types of silicon semiconductor.

This is pretty much the same as a Photovoltaic cell, a diode or a transistor works.

[KitBetts-Masters]

Grab my new book to help you get ready for studying A Level Physics and to prepare for the exams:

[davehimlin]

I have a stovefan....was wondering if there was a way to increase the temp difference between bottom and top of the peltier, and if so, woould it make a noticeable difference on amount of air the fan blows out ? For example, I was thinking about adding a containment system for the very top of the aluminum heat sinks, to allow me to fill it with water, which should create a bigger temp difference ?

[paulkindervater]

Could you put it on an induction hotplate directly, or on an induction hotplate diffuser?

[calebleetayor]

So what’s the lowest heat temperature that will start that motor to turn the fan and if you introduced a freezing a lower temperature of frozen essentially negative then with the fan start at a lower heat

[oneupmanship]

Science nerds are just afraid to admit that it runs by magic.

[cdevidal]

How is it the silicon doesn't run out of electrons?

[meandkg]

Awesome video! I was just wondering is this really GCSE and A level physics? I only learned about semiconductors and p and n type doping in college

[bobgent]

Yeah, that intro makes the video look super amateur. the shaky camera, the blurry images, and someone else talking in the background. I nearly switched off after ten seconds

[ruberduck]

The very first explanation that I can understand well I understand the bits I can hear, Maybe you could gag that blade shouting over

[ksk]

Two people speaking sometimes at same time with TV sound in the background make it difficult to watch and listen to this video.

[marlenjvaswal]

I made it by myself thanks to woodprix plans. I think it's the best way to learn how to build.

[kehr]

Rubbish, why not tell the truth. IT'S MAGIC.

[ShepherdsChapelonYT]

Shepherdchapelcom explains the whole bible God bless.