The Radioactivity

Timeline

Period: Apr 1, 1780 to Apr 30, 2014

Uranium

Feb 7, 1789

If uranium wasn’t known, people would die without knowing who touched a radioactive element.

Gamma Rays

Jun 23, 1895

If the Gamma rays hadn’t been discovered, we wouldn’t have radiation testing (RT) in nondestructive testing (NDT)

Becquerel

Feb 9, 1896

If radioactivity hadn’t been discovered by Henri Becquerel in 1896, probably we would not have atomic model.

International Unit

Jun 3, 1896

If Becquerel hadn’t discovered the radioactivity spontaneously, this wouldn’t have international units of measurement

X-Ray Machine

Mar 4, 1901

If hadn’t developed the X-ray machine, we couldn’t see the fractures due to an accident

Propagation of energy

Oct 18, 1903

If hadn’t discovered the radioactivity, wouldn’t know that this is propagation of energy in the form of electromagnetic waves or subatomic particles through a vacuum or a material medium

Sources of ionizing radiation

Dec 11, 1912

If hadn’t studied as a person is radiates, wouldn’t know that the soil, water and other are natural sources of ionizing radiation

Protons and neutrons

Aug 17, 1920

If hadn’t studied the radioactivity, wouldn’t know that substances that have an excess of protons or neutrons are usually radioactive

Nuclear Power Plants

Dec 2, 1942

If had been careful with the nuclear power plants in Japan, possibly could have prevented the irradiation in Fukushima

Nuclear Wastes

Apr 30, 2014

If scientists had thought before about how to destroy a radioactive material, possibly they hadn’t modernized the field of nuclear energy!