Electron didn't flow

@@wumbology3109 electron drift

@@wumbology3109 yes they do. By what definition don't they flow.

Thanks - a great pleasure - Rob

you're so right. they should've at least mention how this also imposes some safety issue, lol. not wanna take the fun out of experimenting, but that's nothing wrong of rising at least the awareness.

That’s part of the experimental process. Try it on your friends ;-)

you were very right of doing so, actually .. they don't really work this way!

Thanks for your kind remarks. Deane.

My 9 year old son is just learning about electricity and circuits in school. I think we'll have to make one of these this weekend! Thanks!

womp, womp, wowowowomp!

lol :) of course not!

How can a driver be a conductor at the same time?

I like biscuits....alot

It’s a resistor. A semiconductor conducts in one direction

Many thanks - lots more at kzfaq.info with new stuff each week for subscribers - Rob

Adding a (variable) resistor also works with LEDs ... think of it as a tap of water running halfway turned on vs running fully turned on but clogged half of the time (switching at a very fast rate). In the end you get the same output of water. It depends on your application and circuit which approach is to be prefered.

They also add an extra "i" in aluminum vs aluminium

@@SquirrelASMR Yeah…see? There ya _GO._ Lol!! Just like _THAT!_ Good _work_ there! And thank you, for adding that in. I commence you & tip my hat in your direction! It’s just so _INTERESTING,_ to me. Ya know? Growing up in the Appalachian Mountain Plateaus (what they apparently call it now. We called it Foothills most of my life), of Northeast Kentucky - on the shared border of Ohio & West Virginia, creating a Tri-State area; & straight north of the western tip of Virginia), in the 80s & 90s. At that time, smaller places like _that_ seemed like older times, when ya don’t see much else of the world. We still took vacations & trips. But, we were also _not_ a “wealthy” family. So, you didn’t hear too many foreign accents nor very much. Most we ever did, at _HOME_ (which is 98% _WHITE,_ & I married one of the few black women, in m ya he group there. Lol!! So, we left & came to SW Florida on the Gulf Coast straight south of Tampa…) was when the Brazilian, German, & Scottish foreign exchange students came in every year. _THAT_ was pretty cool. But, that’s all we got. Had a couple Canadians. Even not many from other parts of the States _itself!_ Lol! We had one girl transferred from Minnesota, & she had a *THICK* accent, to start. Lol!! Cincy has a very unique accent, that I picked up in college. Lol! So, anyway….all these different places speaking the SAME language. But, they have enough differences that there should be 4 Sub-Languages. British English, American English (which Canadians speak), Australian English (which New Zealand speaks), & South African English. Lol! Had a couple Aussie friends, in college. That was cool. But, modern internet has come SO far! Like, even just since I graduated College at & from Marshall University back in 2007..it has evolved & morphed _TREMENDOUSLY._ So, it’s opened up the opportunity to be able to hear these things, whenever we want to. Love it! Sorry this was lengthy. Lol! Just blazed down & a tad stoned. Lol!

@@anamekian1742 haha, that was a nice read. I also just smoked up for bed too haha. I'm Canadian but idk if I have an accent, I've been told I do but that was from other Canadians and nobody can explain it. I think I more am just mumbling and lazily slurring words than an accent.

Ooo interesting! Thanks for sharing. 😀🧠👍

It’s be great but I think it was wiped. This episode I think is from the early-mid ‘80s

paper clip ?? never heard of it .... ooh you mean skeleton key for old door locks 😋

Lololol

The two terms are largely interchangable. Even compact flourescents were often referred to as "flourescent globes" in spite of the shape bearing no similarity to a globe.

Of course it's OK, Andy! We are glad you have discovered our Curiosity Show KZfaq channel. Rob and I believe that learning can be fun. Share the good news with your friends. www.curiosityshow.com.au Deane.

I sure hope not, I've been binge watching the clips for maybe an hour now 🤣

regional thing eh

Because the earth is really flat

viciousKev it is in Australia

If Shakespeare had been Australian it would have been the Bulb Theatre.

Same thing for torch = flashlight. Some regions have some different names for different things - like pop = soda in Ohio.

that's a fantastic pun. too bad this comment got buried, somehow.

Graphite is, particularly. Other forms of carbon, I'm not so sure about. Fun Fact: some of the first incandescent light bulbs--or the prototypes, anyway--used little carbon rods as the filament.

and commonly used in brushes on commutators.

Some of the forms of carbon are good conductors of electricity and heat! (Diamond is good at both.)

Carbon is essentially a semiconductor. Its an insulator that can be made to conduct based on its molecular structure.

You can use any very very fine wire. The problem is that in your day to day life rarely do you encounter wires that are as fine as what's used in steel wool. Fine steel wool fibers are 0.04 mm or 1.5 thousandths of an inch. Due to the low total power consumption of the lamp a wire that's any larger than shown are not going to have enough resistance/voltage drop across a short length as shown in the experiment.

@@otm646 Thank you !

@@otm646 why does it drop in the first place with thin wire? Is it getting lost to the environment or something more? Bc I thought length wouldn't affect the bottleneck in that way, but idk much about elecricts

@@SquirrelASMR Resistance in a conductor is basically a measure of how likely an electron is to run into a positive ion on its way through. Think of balls rolling down a ramp and when they get to the end they push a button which briefly turns on a light. Now put holes in the floor every few metres - not all the balls will fall into a hole, but some will. If you make the ramp wider (or use a thicker wire) then more of the balls are likely to avoid falling in a hole. If it's narrower almost all of the balls will. Likewise for if the ramp is longer - the more holes the balls have to get past, the less likely that they'll get all the way down without falling. It's an oversimplification - there's a lot more going on with elecricity than this analogy can cover - but it's enough for this particular case I think.

@@TheMightySwash okkkkk thankeee!!! I appreciate it 🙏

Now, lemme guess you're going to shock yourself by putting these in the power outlet of your house, he's using small batteries to avoid that risk

yes, it would (it's even somehow implied in this segment because they claim, this is how your light dimmer at home works which runs "on" AC. so they know, this would work with AC. just, that principle isn't used because foremost, it would cause heat issues)

while your statement represents clear dramatisation, the direction we're heading towards actually looks like that, yes.

Thanks. Curiosity Show was a national science program featuring Dr Rob Morrison and Dr Deane Hutton. It was made in Adelaide, South Australia and screened nationally in Australia as well as in Europe, Asia and Australasia (14 countries and dubbed in German for Europe) from 1972-1990. Deane and Rob intentionally used everyday items around the house (like old rusty cans) so that people could repeat the demonstrations with materials they had to hand. In 1984 Curiosity Show won the Prix Jeunesse International, the world's top award for TV programs for young people. Rob and Deane are steadily uploading segments at kzfaq.info Why not subscribe?

that still counts ... you just made the dim light , more bright lol

It's an Australian show so I assume he is Australian.

He got lightup globes tho.

Wasn't that the guy with the enormous knob?

@@tonyhancock3912 Depends what you mean by "enormous knob"

Really or are you just joking?

Because it's what you use to pin your drawings on the wall.

Well they work completely differently, are based on completely different mechanisms, have very different requirements, and have vastly different trade-offs; but yea, they both manage to achieve a similar result in this particular situation. So I'm gonna say: no.

@@timharig A conductive slider moving up and down an inductor. It's functionally a potentiometer/variable resistor that uses a sliding tap. How are they not the same core principle?

"they work completely differently": One works by controlling voltage while the other works by controlling current. "are based on completely different mechanisms": Reactance vs. resistance. "have very different requirements": Inductors don't do much with DC. "have vastly different trade-offs" : Resistance works with DC but has two major problems. 1. It loses real energy to heat whereas you don't really lose reactive energy. 2. The inductive method will tend to maintain a relatively constant voltage throughout its targeted load range. Since the resistive method is limiting current, it will vary the voltage widely as the load changes. The fact that they both use brushes is mostly incidental. I mean I guess by your logic you would say a piston is pretty much the same as a jet engine because they both have a throttle?

@@timharig They both use the length of the material to control the output, rather than the thickness or "rating" of the material though, right?

@@4pThorpy No. Thickness and length will both contribute to resistance (varying thickness is how you create rheostats with either linear or logarithmic tapers) . Inductance is not determined by the length of the conductor so much as it is defined by its shape and number of turns a well as its core, mutual inductance, etc. Calculating the resistance of a chunk of conductor is relatively straight forward. Calculating the inductance of coil or cable , especially if it isn't a solenoid or straight wire, can be much more difficult. You might also consider that a mechanical wiper is not the only way to select the coils of an autotransformer. Since that is what you seem to be focusing on. It could also be done using solid state switching. How the coil is selected is incidental to its function in the circuit.

I think you need to weld two strips of metals with different thermal expansion properties or one university student to have that.

short answer: no. a little longer answer: it's not even the same principle. something missed by this otherwise fantastic show.

I found a picture from that era of a Radio Shack battery club card that gave the bearer one free battery per month for a year, with a maximum value of $5.88. That puts a single D cell battery at around 49 cents. Though I suspect the intent in this project was to use batteries that were just lying around.