3 الموسم
46 حلقة
Why Is It So? - Season 3 Episode 10 الحلقة 10
Everything is magnetic to more or less degree, says Miller. He suggests making an iron bar a magnet just by aligning it properly and striking it at one end. Then he introduces the electromagnet. And just how strong is a magnetic force? It's a puzzler.
- عام: 2012
- بلد: Australia
- النوع:
- ستوديو: PBS
- الكلمة الرئيسية:
- مخرج:
- المصبوب: Julius Sumner Miller