reblog if ur kinda cold and pretty tired
That moment when you realize how loved you were
At first i just wanted to draw Loki’s stupid face being indignant but things escalated from there :p
One time I told my friend’s mom that I was “okay” with durian and she immediately started telling everyone that I loved durian and I had to eat all this durian stuff that tasted like farts.
become meguca girl ✧˖°｡.:*☆
The Kingdom Hearts fandom at its finest.
DO NOT GET A CRUSH EVER
THEY CALL IT A CRUSH CAUSE IT CRUSHES YOUR SOUL AND EVERYTHING YOU STAND FOR
"He treats me like a normal person.”
knk is perfect in every way
Video: Planetary Resources on ‘Why Asteroid Mining Will Fuel Human Expansion Into The Cosmos”.
Well worth a watch at only 2:26 long.
Is that why all the Doctor’s companions are female? “No co-ed tardis for you.”
Sorry, had to butt in.
Ian Chesterton, Steven Taylor, Ben Jackson, Jamie McCrimmon, the Brigadier, Sergeant Benton, Captain Mike Yates, Harry Sullivan, Adric, Turlough, Jack Harkness, and Rory Williams are what, spare change?
NOT ALL THE DOCTOR’S COMPANIONS ARE FEMALE.
uh…you forgot someone.
This is really a physics question…
But as a note, the speed of light is now 299 792 458 m / s by definition, in the sense that the meter is defined as the distance light travels in 1/299792458 of a second (which is itself defined based on the emissions of a cesium-133 atom).
Anyway, Special Relativity is, at its core. If you start off with the basic assumptions of physics (laws of physics are same at all points in space, the law of physics are identical in all directions, etc.) and assume that space obeys an Euclidean coordinate system (and hence that space-time is Riemannian), and add the so-called Principle of Relativity:
The laws of physics should be identical in all inertial reference frames*
then it turns out that something very similar to Special Relativity falls out. In fact, the only undetermined parameter is whether there is a maximum speed**. If there is no such speed (if the maximum speed is infinity), you get classical mechanics. But as it turns out, there is a maximum speed, which is 299792458 m/s, and that’s just how the world works. Viewed in this lens, the speed of light seems to just be a fundamental property of existence.
As for why light itself travels at the speed of light, this relates to the fact that its particle, the photon, is massless. Because of the fact that an object’s apparent mass increases when observed from reference frames of greater and greater velocity relative to the object, no object with mass can travel at the speed of light—conversely, an object with 0 mass can only exist at the speed of light, as this is the only velocity at which a massless object can still have mass-energy (a particle with zero mass and energy effectively doesn’t exist). It might seem strange that massless objects exist at all, but it turns out that they do, primarily as packets of quantized field energy.
Why does the universe have a maximum speed, and why is it what it is? That’s a much harder question—one of the open questions of physics is the origin of the fundamental constants. Speaking philosophically, it seems like the universe is not the idealized continuous world you might imagine aesthetically—it has a maximum speed, an effective minimum distance (the Planck distance) and an effective minimum unit of time (the Planck time), whereas for aesthetic reasons, it would seem like the universe should have an infinite maximum speed and a fully continuous space-time. But that’s just not how it is.
*An inertial reference frame is a reference frame in which Newton’s First Law applies without the need to assume any outside forces; a free object will move at a constant velocity. It is easy to infer that all inertial reference frames may be transformed into another by at most a coordinate rotation, translation, and change of velocity.
**You could also frame this as “Does there exist any object or phenomena whose speed is identical (invariant) in all reference frames?”. It turns out, however, that if any such object exists, then all such objects must have the same speed, and that this speed must be the maximum (unless the object has imaginary or complex mass, but thus far that has not been found to be possible).