Magnetism: Induction

Рет қаралды 380,775

14 жыл бұрын

Introduction to the topic of magnetically induced electric current, with animations. Part of multipart series on magnetism and nanotechnology.
Subsequent installments will cover Permanent Magnets, Induction, Electromagnets, Transformers, Motors Data Storage, Magnetic Logic and Nanotech applications.
It is intended for first year community college level students but could be used for many other audiences learning basic magnetism.
See other videos and learning materials at our project web site:
www.umassk12.net/nanodev/NanoEd/

Пікірлер: 36

@CHMnanoed 13 жыл бұрын

Thanks for your feedback, it is helpful as we refine these. This was discussed during scripting. As you point out, the actual flashlight has a capacitor and rectifier circuit, and uses an LED, not a light bulb. Because we were trying to reach an audience at a very introductory level, we simplified things, perhaps overly. The plan is to accompany the videos with background documents, one of which will be an explanation of the actual circuit, introducing diodes and capacitors.

@lubime10 13 жыл бұрын

You have done a excelllent job , it is very nice to try to explain with grafic and animation , I'm hopping that you continue doing more of this kind of work. Thank , I used this video to show to my students how electricity and the Magnetic field are related with one each other. Thanks keep up a good works.!!!

@laurenceable67 12 жыл бұрын

@sorova That "battery" would be called a "capacitor", which temporarily stores electricity produced by the movement of the magnet through the coil.

@eunhye_seo Жыл бұрын

Hello, is it okay if I use a part of this video for my class video?

@DeepeshMishra 13 жыл бұрын

fantastic my dear friend mind blowing ...keep it up thanx alot

@saniyasyed6363 8 жыл бұрын

I have to generate light by electromagnetic induction as my project work...so I have to just take a cylindrical bottle or anything ,bulb,magnet and coil ? or any other thing also.

@hayel2015 6 жыл бұрын

Fantastic work man 😘

@prabhakarv4193 5 жыл бұрын

Informative video

@coolbluelights 9 жыл бұрын

You forgot to add the battery and charging circuit in the shake flashlight.

@FrankLopezx 8 жыл бұрын

+coolbluelights and the capacitor , this energy as presented in the animation is good to light only if you have the power switched on , in the video he shake then he switched on in order for that to happen the energy had to have been saved in a capacitor to then be discharged when you switch on and so i guess that a blocking diode will be in the circuit with the capacitor to stop the electron from flowing out to the light bulb till it is switched on in which case the diode will be cut of from the capacitor allowing the electrons to flow to the light

@zolkinas 9 жыл бұрын

Thanks a lot to CHMnanoed!

@Winlith 12 жыл бұрын

@sorova true

@SkylerF 10 жыл бұрын

But they stay on for a while even after you stop shaking it??

@destan5568 9 жыл бұрын

In reality the torch or flashlight has a battery it's just that you never need to replace it because when you shake the torch or flashlight the electromagnetic induction charges the battery so the battery can hold the energy produced, which means it is one of the most efficient torch or flashlight you can buy, it's also good to keep one in the car, so you can avoid the horror of a night time car breakdown without any source of light.

@CubanSauce 10 жыл бұрын

The last part, you forgot to mention where the voltage for the flashlight is stored.

@exoplanet11 11 жыл бұрын

For full details look at The King Of Random's youtube video on "shake flashlight"

@user-ku4ch8fz3u 11 жыл бұрын

good

@sorova 12 жыл бұрын

@laurenceable67 No, it's not a capacitor it's a real battery. I saw a TV show about it. Once the battery runs down tha's it.

@user-kw4rk4wh6z 10 жыл бұрын

+ ionistor / supercapacitor / ?

@mhmadmhmad-qi6nm 3 жыл бұрын

هل يوجد قنوات مترجمة للعربي

@mhmadmhmad-qi6nm 3 жыл бұрын

؟؟

@rajakullayappap7015 11 жыл бұрын

Good

@jeangatti9384 5 жыл бұрын

Oersted discovery was made in 1820 so in the 19th century, and not in the 17th century

@doormagic 11 жыл бұрын

Your flash light have a battery,i have one like that.

@AlienRelics 13 жыл бұрын

That was very misleading, it is going to give the false impression that the coil becomes charged. Your circuit is missing diodes and a capacitor to store the charge generated by the magnet and coil.

@sardakuar 9 жыл бұрын

lol that lamp uses batterys

@odouls779 8 жыл бұрын

Your explanation is wrong because the current was not stored anywhere. Also LED lights only light one way and not the reverse. The flashlight was not lighting when you were shaking not as you demonstrated

@sorova 12 жыл бұрын

Most of these torches have been found to be frauds and there is a small battery in it! There would not be enough power for the bulb with that small coil and the movement.