Get a copy of What If? 2 and Randall’s other books at: https://xkcd.com/books
More serious answers to absurd questions at: https://what-if.xkcd.com/
If every person on Earth aimed a laser pointer at the Moon at the same time, would it change color?
Credits
*******
Randall Munroe | Narrator
Henry Reich | Writer & Director
Lizah van der Aart | Illustration and Video Editing
Ever Salazar | Chief Chaos Controller
Know Art Studios | Music & Sound Effects
What If? The Video Series is the official adaptation of the What If? books by Randall Munroe and is produced by Neptune Studios LLC.
Randall Munroe is the author of the New York Times bestsellers What If? 2, How To, What If?, and Thing Explainer; the science question-and-answer blog What If?; and the popular web comic xkcd (https://xkcd.com). A former NASA roboticist, he left the agency in 2006 to draw comics on the internet full time.
Henry Reich is the creator of MinutePhysics and executive producer of MinuteEarth and MinuteFood and founder of Neptune Studios LLC (the parent company for all three youtube channels).
©2024 xkcd, inc.
5 miliwatt can also blind you
But Still…. We need MORE POWER!!!!
3:42 There are lasers several times more powerful than 500 TW
https://en.wikipedia.org/wiki/List_of_petawatt_lasers?wprov=sfti1#
the answer you get at the start of the video is google and the mid to end of the video is bing
i worked on laser ablation many years ago so i was excited to hear it mentioned! cool tech, weird trade off of problems vs conventional (chemical) rocketry. i’m still most partial to freeman dyson’s impulse (nuclear bomb) rocket design.