Mar 16, 2025
Roentgenium is named after Wilhelm Röntgen, discoverer of X-rays. It is predicted to be a noble metal, since calculations indicate its atomic radius and ionization potential is similar to that of gold.
seen from China
seen from Australia
seen from United States
seen from Japan
seen from China
seen from United Kingdom
seen from United States
seen from United States
seen from United Kingdom
seen from United States
seen from United Kingdom
seen from Brazil
seen from Malaysia
seen from China
seen from Netherlands
seen from Singapore
seen from Malaysia
seen from United States
seen from Australia
seen from Russia
Roentgenium is named after Wilhelm Röntgen, discoverer of X-rays. It is predicted to be a noble metal, since calculations indicate its atomic radius and ionization potential is similar to that of gold.
Wilhelm Röntgen (27 March 1845 – 10 February 1923)
On November the 8th 1895 physicist Wilhelm Rontgen (1845-1923) experimented with electro-magnetic waves and accidentally discovered x-rays. This opened up several whole new fields of medicine. Rontgen was was the winner if the first Nobel prize for physics, given in 1901.
“Being perfectly satisfied that all energy in matter is drawn from the environment, it was quite natural that when radioactivity was discovered in 1896 I immediately started a search for the external agent which caused it. The existence of radioactivity was positive proof of the existence of external rays. I had previously investigated various terrestrial disturbances affecting wireless circuits but none of them or any others emanating from the earth could produce a steady sustained action and I was driven to the conclusion that the activating rays were of cosmic origin. This fact I announced in my papers on Roentgen rays and Radiations contributed to the Electrical Review of New York, in 1897. However, as radioactivity was observed equally well in other widely separated parts of the world, it was obvious that the rays must be impinging on the earth from all directions. Now, of all bodies in the Cosmos, our sun was most likely to furnish a clue as to their origin and character. Before the electron theory was advanced, I had established that radioactive rays consisted of particles of primary matter not further decomposable, and the first question to answer was whether the sun is charged to a sufficiently high potential to produce the effects noted. This called for a prolonged investigation which culminated in my finding that the sun’s potential was 216 billions of volts and that all such large and hot heavenly bodies emit cosmic rays. Through further solar research and observation of Novae this has been proved conclusively, and to deny it would be like denying the light and heat of the sun.”
–Nikola Tesla
“Dynamic Theory of Gravity.” July 10, 1937 (Prior to interviews with the press on his 81st birthday observance).
At his laboratory at the University of Würzburg, 50-year-old Wilhelm Röntgen was investigating the external effects from the various types of vacuum tube equipment when an electrical discharge is passed through them. Röntgen observed that the discharged caused a fluorescent effect on a cardboard screen when placed close to the aluminum window of the tube (the cardboard was intended to prevent damage to the aluminum). Röntgen thought that using a thicker tube might produce a stronger effect, and on 8 November 1895 tested his hypothesis, and darkened the room in order to see the fluorescent effect better.
Röntgen determined that a new ray must be the cause and named it x-ray. 6 weeks after his initial experiment, Röntgen took a picture of his wife Anna Bertha’s hand using X-rays.
Wilhelm Röntgen (27 March 1845 – 10 February 1923)
Wilhelm Röntgen (27 March 1845 – 10 February 1923)
Wilhelm Röntgen (27 March 1845 – 10 February 1923)