magnetic needle

The only instrument we used was the special magnetic needle.

Magnetic needle tells you what's going on in the sun, the stars.

"This way, they cannot fall back even on the variations of the magnetic needle."

Was it, then, Negoro's interest for the magnetic needle to return to its true direction?

The magnetic needle is free to rotate in the horizontal plane.

A magnetic needle is placed parallel with the copper strip.

Ørsted is seen demonstrating the effect of an electric current on a magnetic needle.

There are no good tables of the declinations of the magnetic needle.

A much better guide for the surveyor than the magnetic needle compass was much needed.

No magnetic needle was ever truer than his finger when he touched the vulnerable spot in an opponent's mind.

If lava solidifies 500,000 years later, the congealed magnetic needles will point the opposite way.

Center your magnetic needle on the float.

He used a magnetic needle which dipped into a mercury contact when an electric current passed through the surrounding coil.

When a British ship passed by over it, the mass of the ship caused the magnetic needle inside the mine to move slightly.

The magnetic needle in the binnacle was the point on which the Mary Turner ever pivoted.

The receiving instrument consisted of six galvanometers with magnetic needles, suspended from the silk threads.

It consists of a tiny, powerful magnetic needle pivoted at the centre of the coil.

This allowed sailors to navigate the seas more accurately with the magnetic needle compass, also first described by Shen.

-suggested experiments with magnetic needles and insects.

And with all the iron around us, navigated with the magnetic needle alone, for the gyro compass too was broken.

The typical Chinese navigational compass was in the form of a magnetic needle floating in a bowl of water.

Our magnetic needle indicated the presence and richness of the invisible deposits of magnetic ore.

The device consisted of two circular boxes, similar to compasses, each with a magnetic needle, supposed to be magnetized by the same lodestone.

They were to pay particular attention to magnetic measurements, especially the possible interactions between magnetic needles, atmospheric electricity and the aurora borealis.

In England, Wheatstone and Cooke had introduced a ponderous magnetic needle telegraph.