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Wait until they see the speaker that makes noise at the speed of sound.
I have a dollar store laser pointer than can also travel at the speed of light
That’s impressive. Having a non-photon mass traveling at the speed of light would break our understanding of physics. Get that laser pointer to the lab ASAP
At the speeds it’s moving I imagine we already lost it.
Pssh, I have a 30 year old flashlight that can do the same.
I have a kerosene lantern that does the same.
Dang, that’s rad!
Wait until you learn how old my sun is
Your sun’s light can travel at the speed of light?
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Claims to travel at the speed of light.
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Still takes eight minutes to get here.
Sus.
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Wait, how do you make the laser pointer travel at the speed of light? I assume it has some mass.
Who allowed them to sell the military equipment??
The laser pointer can travel the light of speed? If you turn it on, does the laser not come out of the laser pointer?
The laser and the laser pointer are both traveling away from each other at the speed of light, so from the pointer’s perspective the laser is traveling at twice the speed of light.
speed is distance over time, and for light both of those are undefined.
I think you’ve got to be a little careful how you say what you mean here:
In light’s own reference frame, this is true-ish from a pure special relativity perspective. Velocity is sort of undefined in that case because at c, Lorentz transformations bring all distances to zero, meaning that the photon is everywhere at the SAME time. Or said another way, it’s everywhere on its own simultaneity curve. Maybe this is splitting hairs on the definition of “undefined” because, mathematically yeah you’re right, but a rock also moves zero distance in zero time. Its more like it’s velocity doesnt make sense to compute.
From the outside though (as in a non photon frame) this is not true at all. Using laws of refraction you can compute, and even photograph and verify a real, defined speed for a photon in a medium.
You are being downvoted as if your point was offensive or harmful. You are wrong, but it’s totally counter intuitive and I think this is a mistake that everyone makes when studying introductory physics. This would be correct for anything moving at relatively low speeds. But when you’re talking about light, or anything that goes so fast that “percentage of the speed of light” starts being a useful unit to describe their speed, this concept starts being a bit weirder.
This is actually the basic principle of Einstein’s theory of relativity: the speed of light (in a vacuum) is the same for all observers, regardless of their frame of reference. That means that if the laser pointer emits a laser, the light is moving away from the pointer at the speed of light. If the pointer itself is moving at a speed reeeeeally close to the speed of light… Then the laser will STILL be traveling away from the pointer at the speed of light. And if you, an observer in a frame, see the pointer moving at near the speed of light emit a laser… The laser that the laser emitted is also traveling at the speed of light from your point of view.
And there’s no wordplay here. I don’t mean that it’s light, so of course any speed it travels at is the speed of light. I mean that if you measure its speed from any reference frame, you will get around 300000000 m/s, or around 671 million miles per hour. No matter if you are also traveling at near light speed.
Oh wow. TIL.
The army trembling when I bring a mirror
NOW YOU FUCKED UP!
World around
Around the world
World around
Around the world
SUPER.
HOT.
Wake me up when I can buy a lightsaber.
There was an auction that started at the price of 69420 USD on the 1st of april of 2022
. .
.
.
(The lightsaber is real, selling an extremely dangerous weapon was the joke)
Sweet dreams
What has science done?!
Has Science Really Gone Too Far Even as Decided to Use Even Go Want to do Look More Like?
Is this a reference to something or just aneurism posting?
It was the OG Aneurism Posting
Aaaah i see. Thanks!
This picture got so much compression artifacts just in 3 days lol.
That’s the lasers working.
I’m more concerned that it looks like a laser turret from Portal.
I have wifi router that emits microwaves at the speed of light.
I have lightning fast wifi at home
Elections are slower than light waves so technically you have a slow, shitty router, but at least it can electrocute people so that’s something.
This is why I support the Empire. In a dictatorship there’s no waiting for elections.
But electrocutions are something dif… Never mind.
How many hot pockets do you need?!
At least 3.50
I would have said somewhere between 2.4 and 6.
Pffft, I have a microwave that emits microwaves at microwave speeds to microwave things.
This guy microwaves
deleted by creator
I’d be more impressed if they didn’t.
Is there a way to not?
Just dont.
Sorta, but it’s a pain in the ass.
The medium that the laser goes through could slow it down, but it would still be insanely fast.
It would also still be the speed of light. Always is, unless you specify ‘in a vacuum’ every time.
Adding to the fun - The light is still going the same speed within the medium, but it’s bumping into more things. Those collisions divert the light, lengthening the distance it travels through something like 1 cm of glass vs 1 cm in a vacuum. It changes the time it takes to travel through glass rather than the speed at which the light is moving.
At least that’s what I remember from a YouTube video.
Yes that’s it! Thanks for the link!!
The real fun starts when things move faster than the speed of light, that’s when you get Cherenkov radiation!
I can run at the speed of running, where is my headline?
I can run at the speed of fat
Meanwhile, this headline goes at the speed of clicks:-).
Impressive. The future is awesome! Can we maybe apply this to regular light too? Maybe even green light? Or purple? I’m so excited.
Is purple actually a light color?
No, but violet is, and that’s pretty close.
When you go from green to purple, the light gets more excited too.
insert sensitive chuckle-magazine-guy-meme
sensitive chuckle
Chuckling whilst cold-sore?
Well, for the green light we already have FTL tech, it was invented and perfected by the car behind you as you are waiting for the light to turn green.
Ohhhh right. My bad Sorry…
But can it shit at the precise speed to fully hit individual turbojets fan blades?
I can run at faster than the speed of sound at mach 2
Show me.
There, I just did it! I was too fast for you to see.
:(
