Reply to post: 33,333 x 60W light bulbs?

Has science gone too far? Now boffins dream of shining gigantic laser pointer into space to get aliens' attention

Anonymous Coward
Anonymous Coward

33,333 x 60W light bulbs?

I don't think so.

An incandescent lamp is about 1% efficient (light out to electricity in); an LED about 5% efficient.

So to get 2MW of *output* you'd need approx 3.3 million 60W incandescent bulbs, or about 2 million 20W LED bulbs.

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