How to Build a Laser Death Ray

Ionization

Under certain conditions, light can strip electrons from atoms. This process is called ionization. The electrically charged atoms left behind are called ions. The ions and free electrons together are called a plasma.

Ionization requires energy. This energy comes from the beam. When you have ionization, you are therefore losing energy from your death ray beam. As a result, the range at which the beam can cause damage will decrease, and ionization should be avoided whenever possible.

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