Fun physics facts about lasers


To mark the 60th anniversary of the conception of the modern day laser, the Perimeter Institute brings us these fun physics facts.


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Did you know that the power of early lasers used to be measured in ‘Gilettes’ – literally the amount of power required to burn through one Gilette razor blade?

Since then, lasers have taken over the world with seemingly infinite applications. How can a beam of light both scan our groceries and fix our eyes; cut metal and measure distance?

The lasers we know today are very young – in fact, it was just 60 years ago that Gordon Gould sketched the first proposal of a light emitting device that became what we know as a machine for light amplification by stimulated emission of radiation, or, a LASER.

To mark this important anniversary, the Perimeter Institute has put together a few great facts about the physics of lasers.

The Perimeter Institute

The Perimeter Institute

The Perimeter Institute

The Perimeter Institute

The Perimeter Institute

The Perimeter Institute
Find more facts on the PI blog.

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  1. https://insidetheperimeter.ca/pew-pew-fun-physics-facts-about-lasers/
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