| Show Engineers Develop Fine Vacuum Tube Schenectady Schenectady Schenectady-IP IP Engineers of the General Electric Co have developed a vacuum tube declared to be so sensitive as a measuring device that it will measure an electric current as small as 1 1 of an am am- pere The tube also can measure the light from distant stars Not satisfied with this the engineers engineers engineers en en- explain that the tube is sensitive enough to measure the flow of six electrons per second They go on to explain that if the six electrons per second are arc considered considered considered con con- as that many drops of water then the number of electrons electrons electrons elec elec- flowing flowing- in one minute through the usual watt 50 incandescent incandescent incandescent incan incan- descent lamp equals the number of drops of water that flow over Niagara Falls in years J 1 1 1 1 II I |