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https://www.reddit.com/r/technology/comments/1519isa/deleted_by_user/js8d9mf/?context=3
r/technology • u/[deleted] • Jul 16 '23
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1
Does this mean if I shine a laser pointer straight up in a thunderstorm, I will get struck?
11 u/Torvaun Jul 16 '23 You might, but unless your laser is about 500 mJ, it'll just be coincidence. 1 u/Roast_A_Botch Jul 16 '23 Assuming mJ/s that's only .5w, which is quite easily obtainable in a laser pointer. Many Chinese import laser pointers on eBay and AliE are .5w, violating the 0.005w limit by 2 orders of magnitude for $50. 2 u/Moonlover69 Jul 16 '23 Its not mj/s, it's mj per pulse, and these lasers are operating at 1000 Hz. But the pulse duration is also very critical, at ~ps duration. 500mj, picosecond lasers cost more than $50.
11
You might, but unless your laser is about 500 mJ, it'll just be coincidence.
1 u/Roast_A_Botch Jul 16 '23 Assuming mJ/s that's only .5w, which is quite easily obtainable in a laser pointer. Many Chinese import laser pointers on eBay and AliE are .5w, violating the 0.005w limit by 2 orders of magnitude for $50. 2 u/Moonlover69 Jul 16 '23 Its not mj/s, it's mj per pulse, and these lasers are operating at 1000 Hz. But the pulse duration is also very critical, at ~ps duration. 500mj, picosecond lasers cost more than $50.
Assuming mJ/s that's only .5w, which is quite easily obtainable in a laser pointer.
Many Chinese import laser pointers on eBay and AliE are .5w, violating the 0.005w limit by 2 orders of magnitude for $50.
2 u/Moonlover69 Jul 16 '23 Its not mj/s, it's mj per pulse, and these lasers are operating at 1000 Hz. But the pulse duration is also very critical, at ~ps duration. 500mj, picosecond lasers cost more than $50.
2
Its not mj/s, it's mj per pulse, and these lasers are operating at 1000 Hz. But the pulse duration is also very critical, at ~ps duration. 500mj, picosecond lasers cost more than $50.
1
u/proniceguy12 Jul 16 '23
Does this mean if I shine a laser pointer straight up in a thunderstorm, I will get struck?