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Question for physicsmos: why can't light from a flashlight travel infinitely?

Assume there's no atmosphere, and you turn on a flashlight a...
wonderful misunderstood home blood rage
  07/25/26
It is visible. You would know if you actually tried.
Yapping Dilemma Voyeur
  07/25/26
So the light travels in a straight line but the curvature of...
wonderful misunderstood home blood rage
  07/25/26
that's not it at all. trust me bro, you need to get a 1mm mi...
Yapping Dilemma Voyeur
  07/25/26
The actual answer "physics" gives us predicts that...
wonderful misunderstood home blood rage
  07/25/26
...
frisky legal warrant
  07/25/26
scientists cannot explain this
Razzle twinkling party of the first part associate
  07/25/26
Light isn’t even real lmao
passionate sanctuary jewess
  07/25/26
...
frisky legal warrant
  07/25/26
, he said regarding the godhead
Razzle twinkling party of the first part associate
  07/25/26
...
frisky legal warrant
  07/25/26
...
Impressive stain
  07/25/26
Photons are less interactive with our fabric of space time t...
clear house filthpig
  07/25/26
In a vacuum, it does. But irl the light will likely collide...
clear house filthpig
  07/25/26
Wrong answer
wonderful misunderstood home blood rage
  07/25/26
lol ok
clear house filthpig
  07/25/26
this whole place is a churning soup of gasses full of life a...
supple skinny woman knife
  07/25/26
...
frisky legal warrant
  07/25/26
...
Smoky idiot
  07/25/26
...
Stirring bearded gaming laptop
  07/25/26
These people will tell you that if you're riding a bike and ...
vivacious garrison electric furnace
  07/25/26
...
wonderful misunderstood home blood rage
  07/25/26
...
passionate sanctuary jewess
  07/25/26
...
Impressive stain
  07/25/26
omg xo 2026
clear house filthpig
  07/25/26
...
mint offensive hell double fault
  07/25/26
...
adventurous beta fanboi mad-dog skullcap
  07/25/26
something about number of photons and distance and square ro...
Sexy office macaca
  07/25/26
Nah, photons don't just get tired and fall to the ground
wonderful misunderstood home blood rage
  07/25/26
...
frisky legal warrant
  07/25/26
...
passionate sanctuary jewess
  07/25/26


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Date: July 25th, 2026 4:52 PM
Author: wonderful misunderstood home blood rage

Assume there's no atmosphere, and you turn on a flashlight at night. Shouldn't the light be visible from a million miles away?

(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50023925)



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Date: July 25th, 2026 5:13 PM
Author: Yapping Dilemma Voyeur

It is visible. You would know if you actually tried.

(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50023976)



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Date: July 25th, 2026 5:47 PM
Author: wonderful misunderstood home blood rage

So the light travels in a straight line but the curvature of the earth prevents it from lighting up surfaces 100 miles away?

(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50024052)



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Date: July 25th, 2026 5:57 PM
Author: Yapping Dilemma Voyeur

that's not it at all. trust me bro, you need to get a 1mm mile stretch with no atmosphere and try it and you'll see.

(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50024066)



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Date: July 25th, 2026 9:16 PM
Author: wonderful misunderstood home blood rage

The actual answer "physics" gives us predicts that that won't work in the manner you describe

(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50024430)



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Date: July 25th, 2026 4:52 PM
Author: frisky legal warrant



(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50023926)



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Date: July 25th, 2026 4:53 PM
Author: Razzle twinkling party of the first part associate

scientists cannot explain this

(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50023929)



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Date: July 25th, 2026 4:53 PM
Author: passionate sanctuary jewess

Light isn’t even real lmao

(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50023931)



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Date: July 25th, 2026 4:54 PM
Author: frisky legal warrant



(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50023932)



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Date: July 25th, 2026 4:54 PM
Author: Razzle twinkling party of the first part associate

, he said regarding the godhead

(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50023934)



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Date: July 25th, 2026 4:54 PM
Author: frisky legal warrant



(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50023936)



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Date: July 25th, 2026 5:27 PM
Author: Impressive stain



(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50023998)



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Date: July 25th, 2026 6:13 PM
Author: clear house filthpig

Photons are less interactive with our fabric of space time than solid matter. So in effect they are less grounded in reality actually.

(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50024090)



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Date: July 25th, 2026 4:59 PM
Author: clear house filthpig

In a vacuum, it does. But irl the light will likely collide with other particles convert into heat energy and disperse.

(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50023947)



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Date: July 25th, 2026 5:06 PM
Author: wonderful misunderstood home blood rage

Wrong answer

(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50023959)



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Date: July 25th, 2026 6:12 PM
Author: clear house filthpig

lol ok

(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50024087)



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Date: July 25th, 2026 4:59 PM
Author: supple skinny woman knife

this whole place is a churning soup of gasses full of life and processes we don't understand

(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50023948)



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Date: July 25th, 2026 4:59 PM
Author: frisky legal warrant



(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50023949)



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Date: July 25th, 2026 5:01 PM
Author: Smoky idiot



(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50023954)



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Date: July 25th, 2026 8:29 PM
Author: Stirring bearded gaming laptop



(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50024324)



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Date: July 25th, 2026 5:05 PM
Author: vivacious garrison electric furnace

These people will tell you that if you're riding a bike and shine a flashlight, the light will have the same speed as it would if you were standing still. Physics is like some weird cult

(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50023958)



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Date: July 25th, 2026 5:09 PM
Author: wonderful misunderstood home blood rage



(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50023965)



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Date: July 25th, 2026 5:10 PM
Author: passionate sanctuary jewess



(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50023968)



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Date: July 25th, 2026 5:27 PM
Author: Impressive stain



(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50023999)



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Date: July 25th, 2026 6:12 PM
Author: clear house filthpig

omg xo 2026

(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50024086)



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Date: July 25th, 2026 8:32 PM
Author: mint offensive hell double fault



(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50024331)



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Date: July 25th, 2026 8:35 PM
Author: adventurous beta fanboi mad-dog skullcap



(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50024338)



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Date: July 25th, 2026 6:05 PM
Author: Sexy office macaca

something about number of photons and distance and square roots; i don't really remember 1st semester physics that good.

(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50024072)



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Date: July 25th, 2026 6:07 PM
Author: wonderful misunderstood home blood rage

Nah, photons don't just get tired and fall to the ground

(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50024075)



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Date: July 25th, 2026 6:13 PM
Author: frisky legal warrant



(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50024088)



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Date: July 25th, 2026 8:54 PM
Author: passionate sanctuary jewess



(http://www.autoadmit.com/thread.php?thread_id=5886135&forum_id=2�id.#50024375)