FACTOID # 58: Looking for geniuses? Head straight to Iceland. There are more than 3 Nobel Prize Winners for every million Icelanders.
 
 Home   Encyclopedia   Statistics   Countries A-Z   Flags   Maps   Education   Forum   FAQ   About 
 
WHAT'S NEW
RECENT ARTICLES
More Recent Articles »
 

FACTS & STATISTICS    Simple view

  1. Select countries to view: (hold down Control key and click to select several)

     

     

    Compare:

     

     
  1. Select fact or statistic: (* = graphable)

     

     

     

  2. (OPTIONAL) Compare to statistic: (both need to be graphable)

     

     

     

  3. View result as:

     

       
(OR) SEARCH ALL encyclopedia, stats & forums:   

Encyclopedia > Anode ray

Anode rays (or Canal rays) were produced in experiments by a German scientist, Eugen Goldstein, in 1886. Goldstein used a gas discharge tube which had perforated cathodes. A "ray" was produced in the holes (canals) in the cathode and traveled in a direction opposite to the "cathode ray." In 1907 a study of how this "ray" was deflected in a magnetic field, revealed that the particles making up the ray were of varying mass. The lightest, formed when there was a little hydrogen in the tube, was calcuated to be 1837 times as massive as an electron. This article is about the profession. ... Among the important early researchers in X-rays were Sir William Crookes, Johann Wilhelm Hittorf, Eugene Goldstein, Heinrich Hertz, Philipp Lenard, Hermann von Helmholtz, Thomas Edison, Nikola Tesla, Charles Barkla, and Wilhelm Conrad Roentgen. ... 1886 is a common year starting on Friday (click on link to calendar) // Events January 18 - Modern field hockey is born with the formation of The Hockey Association in England. ... Gas filled tubes are arrangements of electrodes in a gas within an insulating, temperature-resistant envelope. ... Diagram of a copper cathode in a Daniells cell. ... Cathode rays are a phenomenon that is observed in vacuum tubes, i. ... Current flowing through a wire produces a magnetic field (M) around the wire. ... Particles erupt from the collision point of two relativistic (100 GeV) gold ions in the STAR detector of the Relativistic Heavy Ion Collider. ... Mass is a property of physical objects that, roughly speaking, measures the amount of matter they contain. ... General Name, Symbol, Number hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1, 1, s Appearance colorless Atomic mass 1. ... Properties The electron is a fundamental subatomic particle which carries a negative electric charge. ...


From: Chemistry for Changing Times by John W. Hill, Burgess Publishing Company, 1972


External links

  • The Cathode Ray Tube site

  Results from FactBites:
 
CAT Scanner: How Products are Made (2286 words)
X rays are a type of ionizing radiation that is capable of penetrating solid materials to differing degrees, depending their density and thickness.
Since x rays that strike the film produce dark areas after processing, body structures that are easily penetrated by x rays, such as skin, show up as dark regions.
X rays are called ionizing radiation because they are able to interact with and change certain types of matter, such as molecules in the body.
Cathode ray - Wikipedia, the free encyclopedia (374 words)
evacuated glass tubes that are equipped with at least two electrodes, a cathode (negative electrode) and an anode (positive electrode) in a configuration known as a diode.
It was soon understood that cathode rays consist of the actual carriers of electricity which are now known as electrons.
Cathode rays propagate in a straight line in the absence of external influences, but are deflected by electric or magnetic fields (which can be produced by placing high-voltage electrodes or magnets outside the vacuum tube - this explains the effect of magnets on a TV screen).
  More results at FactBites »


 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments
Please enter the 5-letter protection code

Want to know more?
Search encyclopedia, statistics and forums:
 


Lesson Plans | Student Area | Student FAQ | Reviews | Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms.