คำแปล ความหมาย ของ "magnetic field" ที่ค้นพบ

To learn the answer you must know a little about the magnetic field around the world.

Suppose for a moment that pigeons had something in their heads which could sense magnetic fields.

This may be because they could not use the earth's magnetic field.

So there is a magnetic field around earth.

Pigeons can find their way home with the help of the Earth's magnetic field.

The magnets, of course, have a magnetic field around them.

So the pigeon can feel the magnetic field on its head, but it can't feel the Earth's magnetic field.

The magnetite is attracted to the earth's magnetic field.

But the earth's magnetic field is very weak.