electroscope

Tom held the wand near the ball of each electroscope in turn.

We were leaning together like tin leaves in an electroscope.

He used an electroscope to show that there was no electric charge present on the inside of the room's walls.

The catcher was attached to an electroscope to measure its charge.

He turned down the gain to a more or less bearable level and picked up the electroscope.

As he aimed the globes at each electroscope, its leaves swung open!

The electroscope is an important tool in illustrating the photoelectric effect.

Often the electroscope will have a pair of suspended pith balls.

Those little spectacles, the tiny hourglass, the electroscope, the lens.

Julian is amazed by a television-like device, called the electroscope.

"Fll have one of the boys set up an electroscope in the instrument room."

But the electroscope boys claim that quarter power or not, the input is terrific."

She looked at the delicate leaves of gold in the glass shield of the electroscope.

This is the principle of operation of a pith-ball electroscope.

A type of electroscope is also used in the quartz fiber radiation dosimeter.

The same did not apply to a negatively charged electroscope, indicating that the current flow was only possible in one direction.

Charge placed on the metal cap spreads to the stem and the gold leaf of the electroscope.

Electrostatic attempts with application of the universal electroscope, 1928.

The gold-leaf electroscope was one of the first sensitive instruments used to indicate electric charge.

The electroscope now contains a net charge opposite in polarity to that of the charged object.

This consisted of a simple ionization chamber with an electrode running down the center, but no electroscope for reading.

This type of electroscope usually acts as an indicator and not a measuring device, although it can be calibrated.

The electroscope is first discharged, and a charged object is then brought close to the instrument's top terminal.

"I want to make an electroscope.

The locked laboratory door yielded to a control electroscope like that used by Doc Savage and his men.