What tool was used to do measure the depths of the ocean? •What are the 2 pieces of equipment used to collect bottom samples on the Challenger? •What was a newly invented piece of equipment used on the Challenger ship to get water samples called?
Electroscope is the instrument that has the ability to detect the presence of an electric charge. Although electroscope has the power to measure the amount of charge, but for a perfect measurement the electrometer is used. Around the year 1600, electroscope was discovered by William Gilbert he British physician. This is a pretty primitive but highly effective instrument in regards to detecting the presence of electric charges. Two basic but effective electroscopes are the gold-leaf electroscope and the pith-ball electroscope.