The Brain Maze
Region: RS
Friday 07 August 2026 18:08:09 GMT
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Carlos Troncoso :
ok yes, but no lasers in the 19th century. it was a lamp.
2026-09-05 07:54:22
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User13494384339527 :
fun fact we only know the speed of light as a round trip. we don't know what the speed of light is in one direction
2026-08-08 05:50:53
28
Randy Boeglin :
actually this was used to measure 2 times the speed of light. we cant actually measure the one way speed of light
2026-08-10 17:28:52
6
Jason Voorhees :
19th-century lasers? Strange, the first one was invented in 1960
2026-08-08 02:20:19
190
ricardo_lapaz :
laser and 19th century, TT physics 😂
2026-08-07 20:14:56
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user4452286408165 :
we only know the speed AFTER the light has bounced off the mirror, we dont know the speed in 1 direction
2026-08-09 15:10:20
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Perry Gogas :
Laser in the 19th century?? OK.... I thought it was using Ai...
2026-08-07 18:55:29
30
Киевский ухилянт :
laser in 19n century
2026-08-08 22:10:55
8
T-Weezy :
1848-49 - Fizeau used an intense limelight formed into a beam using two astronomical telescopes, one in the bell tower of his father's holiday home in Suresnes, and one 8,633 meters away on Montmartre. At the exit of the Montmartre telescope the light was reflected back to Suresnes where a second, half-silvered mirror reflected the light into Fizeau's eye. His measurement was off by 4.5%.
2026-08-08 05:24:34
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Toby1984 :
wait wait.... wouldn't the light traveling from the flash light be faster than the light coming back? it would have to slow down before returning
2026-08-08 00:17:08
0
💙🏴Tinker-Tailor 🏴💙 :
19 century laser 😂😂😂😂
2026-08-08 15:39:51
0
shanidani3030 :
if I watch this several times and don't exactly understand. does it mean I'm stupid? I mean I know it has to do with being able to calculate rotation speed of the gear and based on the gaps etc knowing the speed of light but I can't wrap my head around it
2026-08-08 07:30:03
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Dulcius ex Asperis :
A LASER in the 1800s...!
2026-08-08 20:47:34
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Zed :
Speed of light, or speed of all waves in space? 😳
2026-08-07 23:56:08
0
Marc :
Except they didn’t have laser back then
2026-08-08 06:08:17
5
frank :
are you telling me that gear can rotate faster than the speed of light and not blow up? is it made of adimantium? I dont believe it
2026-08-10 18:21:46
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user12121212 :
laser used in 1964 for the first time
2026-08-07 20:30:36
11
nothing247365 :
all true except the laser which was nonexistent in 19th century
2026-08-08 08:06:46
28
Over_Your_Drama :
Technically it’s not measuring “the speed” of light. It’s measuring how long light takes to go in one direction, reflect, go in another direction, reflect, and then be measured. While you can make assumptions, and ‘confirm’ with mathematical modeling… you aren’t actually measuring lights speed.
2026-08-08 10:39:10
0
E tabuk :
الليزر ما كان موجود ولكن استخدم مصدر ضوء في ذلك الوقت
2026-08-08 12:03:07
0
Blitz :
Laser in the 19th century… that’s new
2026-08-12 18:10:55
1
ngmkoc :
The glass slows down the light slightly even in a vacuum this would not be accurate
2026-08-08 15:02:30
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Yebo360 :
laser in the 19th century. 😂😂😂😂😂
2026-08-08 04:50:59
1
John :
Did the laser exist in the 19th century? Asking for a friend.
2026-08-09 09:23:23
0
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