Human generator

Last week we had a funny
machine in Room 8 call a
Human generator that only
to handlebars that you had
to spin around to make one of
the lights turn on only
like that turned on
was the LED light
the normal light didn't
turn on because it needed
more power into it.

 using normal light bulbs
waste is more power but
using  LED lights can save
you more money and more
power.