Astronomical literature tends to write " gamma-ray " with a hyphen, by analogy to X-rays, rather than in a way analogous to alpha rays and beta rays.
12.
:Different types of radiation have different ranges . alpha rays are stopped in a very short distance by air . gamma rays OTOH can go much farther.
13.
Skin is sufficient to stop Alpha radiation, so I would assume that alpha rays were stopped by the watch parts and the radon gas amounts were neglegable.
14.
A sample of beryllium was bombarded with alpha rays from the decay of radium in a 1932 experiment by James Chadwick that uncovered the existence of the neutron.
15.
Pilot plant officials said the material from Savannah River is " contact handled transuranic, " or CH-TRU, waste, which emits radioactive alpha rays that are dangerous only if inhaled or ingested.
16.
The radiation from pitchblende was differentiated into alpha rays ( alpha particles ) and beta rays ( beta particles ) by Ernest Rutherford through simple experimentation in 1899, but these proved to be charged particulate types of radiation.
17.
And although alpha rays are extremely weak and cannot penetrate human skin or a thin sheet of paper, they can ultimately cause cancer if plutonium particles remain lodged long enough next to living human tissues, most health physicists agree.
18.
However, in a matter of a month or so, a sample of pure depleted uranium will generate small amounts of thorium-234 and protactinium-234, which emit the more penetrating beta particles at almost the same rate as the uranium emits alpha rays.
19.
Alpha rays ( alpha particles ) and beta rays ( beta particles ) were differentiated by Ernest Rutherford through simple experimentation in 1899 . Rutherford used a generic pitchblende radioactive source and determined that the rays produced by the source had differing penetrations in materials.
20.
In 1903, it was Ernest Rutherford who proposed to call Villard's rays " gamma rays " because they were far more penetrating than the alpha rays and beta rays which he himself had already differentiated and named ( in 1899 ) on the basis of their respective penetrating powers.
