کارت
کارت شما خالی است

کمیت:
0

مجموع:
0

The electric charge of the human body

In the mid-19th century, the Van de Graaff generator was considered an interesting device. It can also be used to demonstrate how charges flow through a conductor.

01:13

Grades 5 – 12

موزالينک

/

لينک وب

nfki_banner