Download Dotted_Light

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Mains electricity wikipedia, lookup

Alternating current wikipedia, lookup

Wire wrap wikipedia, lookup

Transcript
Dotted LIGHT
from
one single wire
… a simple electric circuit
• low voltage power - supply
• and a thin wire
Suppose the current is large enough to make the wire glow,
what would you expect ?
A
B
and this is what you will see :
Look closer …
… and guess a reason for this
• You see the shape of the glowing spots
• And think of the space between them
• Have you seen this before ?
You are right !
• It’s a standing wave
• And how to get this ?
• All you need is …
• A magnet !
and of course ….
an alternating current
in addition:
…with a direct current
both of these pictures A and B
are wrong !
What you really get …
…is this
Think
HOT !!!