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Half-life (3)

Definition: Time taken for half the atoms in radioactive material to decay.


See perfect radioactivity.

See perfect process (2).

See perfect decay (1).

See perfect time (1).

See perfect reaction (6).

See perfect measurement (2).

1520 Products

1520 Products was established in 2005 with the purpose of entertaining and teaching us on key and important aspects of life (such as marriage, sex, etc) through the playing of games which will allow us to laugh but at the same time pass a message of what is the right or ideal way.

1520 Sex Game

1520 Puzzles

1520 Marriage Game