[DOC] [TLE] Chemistry Flashcards | Quizlet [PAR] THE ELEMENTS---Heinrich Geissler found he could create a vacuum by moving 
a column of this element up & down in a tube. mercury. [DOC] [TLE] heinrich geissler: pioneer of electrical science and vacuum technology [PAR] had elements in common. Three ... 1923) discovered a new and different ... 
electron vacuum tube in 1909, has ... This article provides an account of Heinrich 
Geissler's ... would be to become acquainted with ... he was able to build up 
during ... exerted upon a column of mercury .... vacuum pump based on moving a 
col-. [DOC] [TLE] Crookes tube - Wikipedia [PAR] A Crookes tube is an early experimental electrical discharge tube, with vacuum, 
invented by English physicist William Crookes and others around 1869-1875, in 
which cathode rays, streams of electrons, were discovered. Developed from the 
earlier Geissler tube, the Crookes tube consists of a ... Wilhelm Rntgen 
discovered X-rays using the Crookes tube in 1895. [DOC] [TLE] Cathode ray - Wikipedia [PAR] Cathode rays are streams of electrons observed in vacuum tubes. If an 
evacuated glass tube is ... Electrons were first discovered as the constituents of 
cathode rays. ... The current in a beam of cathode rays through a tube can be 
controlled by ... he pumped more air out of the tubes, the Faraday dark space 
spread down the... [DOC] [TLE] Geissler tube - Wikipedia [PAR] A Geissler tube is an early gas discharge tube used to demonstrate the principles 
of electrical glow discharge, similar to modern neon lighting. The tube was 
invented by the German physicist and glassblower Heinrich ... The current 
dissociates electrons from the gas molecules, creating ions, and when the 
electrons... [DOC] [TLE] Discovery of the Electron: J. J. Thomson - Le Moyne [PAR] In what sense, then, can Thomson be said to have discovered the electron? After 
all, he did not invent the vacuum tube or discover cathode rays. ... having a mass 
very much smaller than that of the atom of any known element, and are of the ... 
they are caught in a metal vessel they give up to it a charge of negative electricity. [DOC] [TLE] Vacuum - New World Encyclopedia [PAR] Jan 13, 2016 ... The deep vacuum of space could make it an attractive environment for .... of God, 
which led to the conclusion that God could create a vacuum if he so wished. ... 
The study of vacuum then lapsed until 1855 when Heinrich Geissler ... if Earth is 
moving through a material medium, the medium would have to be... [DOC] [TLE] 9.4 Ideas-Implementation [PAR] Apr 18, 2015 ... The invention of a pump that could evacuate tubes to 10-4 of an ... Thus, an 
electric charge moving through a magnetic field ... In 1855 the German inventor 
and glassblower Heinrich Geissler, invented a vacuum pump that could ..... By 
setting up an experiment in which he allowed the waves to reflect from a... [DOC] [TLE] 83.07.01: An Historical Overview of the Discovery of the X-Ray [PAR] Have the students try to pick up heavier things made of iron such as paper ... In 
1646 he constructed the first air pump to create a vacuum so that he could ... The 
ball was created by melting down pieces of sulphur and pouring the fluid ..... He 
first noted the column of luminescence in the tube was striated and next he found
... [DOC] [TLE] Famous Moments in Science (1851-1900) - Bernard Smith [PAR] It is said that Rntgen discovered X-rays in 1895 using a Crookes tube. ... These 
particles collide with other gas molecules, creating more electrons ... and 
Geissler quickly became famous for the superior vacuum he was able to .... The 
Positive Column, if extended, can become striated, with alternating dark and 
bright bands. [DOC] [TLE] Articles of Interest - University of Delaware [PAR] Jul 29, 2008 ... But how can a liquid be as strikingly hard as glass? ... I think a lot of the elements 
in it are correct, but he said it was not a complete .... Madison, has found a way to 
make thin films of glass with

Question: Heinrich Geissler found he could create a vacuum by moving a column of this element up & down in a tube
Answer: mercury