XRARE & HISTORICAL CIRCA 1900 CROOKES RAILWAY TUBE VACUUM TUBE AUTHENTIC!!!

Pricing & History

Sold for
Start Free Trial or Sign In to see what it's worth.
Sold Date
Source eBay

WONDERFUL HISTORICAL & AUTHENTIC CIRCA AROUND 1900 "EARLY CROOKES RAILWAY TUBE VACUUM TUBE"!! THIS IS GUARANTEED THE REAL THING AND "NOT" A REPRO!! AS RARE AS IT GETS AND IN EXCELLENT WORKING CONDITION!! MEASURES 10 INCHES LONG AND HAS A 2 INCH DIAMETER TUBE AREA. PLEASE READ MY "CONDITION REPORT" AND LOOK OVER ALL MY PICTURES BEFORE DOING ANY BIDDING. HISTORY BELOW!!A Crookes tube is an early experimental electrical discharge tube , with partial vacuum, invented by English physicist William Crookes [1] and others around 1869-1875, [2] in which cathode rays , streams of electrons , were discovered. [3]Developed from the earlier Geissler tube , the Crookes tube consists of a partially evacuated glass container of various shapes, with two metal electrodes , the cathode and the anode , one at either end. When a high voltage is applied between the electrodes, cathode rays ( electrons ) are projected in straight lines from the cathode. It was used by Crookes, Johann Hittorf , Julius Plücker , Eugen Goldstein , Heinrich Hertz , Philipp Lenard and others to discover the properties of cathode rays, culminating in J.J. Thomson 's 1897 identification of cathode rays as negatively charged particles, which were later named electrons . Crookes tubes are now used only for demonstrating cathode rays.Wilhelm Röntgen discovered X-rays using the Crookes read more

Items in the Price Guide are obtained exclusively from licensors and partners solely for our members’ research needs.

Flag item for content or copyright

If this item contains incorrect or inappropriate information please contact us here to flag it for review.

If you are the originator/copyright holder of this photo/item and would prefer it be excluded from our community, contact us here for removal.