(Source: runningonoatmeal, via physicsninja)

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(Source: studygeek, via physicsninja)

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Misconceptions About the Universe

The expanding universe is a complicated place. During inflation the universe expanded faster than light, but that’s something that actually happens all the time, it’s happening right now. This doesn’t violate Einstein’s theory of relativity since nothing is moving through space faster than light, it’s just that space itself is expanding such that far away objects are receding rapidly from each other. Common sense would dictate that objects moving away from us faster than light should be invisible, but they aren’t. This is because light can travel from regions of space which are superluminal relative to us into regions that are subluminal. So our observable universe is bigger than our Hubble sphere - it’s limited by the particle horizon, the distance light could travel to us since the beginning of time as we know it.”

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Over the Rainbow: How DOUBLE Rainbows Form

via scishow:

Take a look… A VERY special guest, LeVar Burton, explains how Double Rainbows are formed.

We’re super excited about this episode, y’all! Double rainbow power!

Support Reading Rainbow on Kickstarter

424 notes

(Source: a-night-in-wonderland, via tohoundnature)

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Nice! Some guys are trying to fund this badass phenomenon of physics so we can all enjoy it. :D

"FLUX is based on a complex, thus rarely known law of physics, a phenomenon called Lenz’s law, which can defy our most commonly experienced physical law, gravity itself. It’s actually nothing new. Heinrich Lenz discovered it in the 1830s, we call it Lenz’s law to honor his discovery ever since."

"Every time the magnetic field changes inside a conducting material, it induces a voltage called electromotive force. Depending on the resistance of the material, it creates a current which behaves just like in traditional electromagnets: produces an additional magnetic field. Lenz’s law states that the magnetic field created by this induced current is so directed as to oppose the change in the source flux. To put it more simply, if you create a changing magnetic field by moving a magnet, it will produce a mechanical force trying to slow down the motion. The faster you move, the stronger the force gets. Every time."

Fund it here if you’re feeling this magical ish,..


(via thepoemthatdoesntrhyme)

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(Source: astrodidact, via bloodredorion)

654 notes

excellent riddle on buoyancy by veritaseum 

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(Source: officialsamwinchester, via the-krusty-crew)

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Pyro Board: 2D Rubens Tube.

"The pressure variations due to the sound waves affect the flow rate of flammable gas from the holes in the Pyro Board and therefore affect the height and colour of flames. This is interesting for visualizing standing wave patterns and simply awesome to watch when put to music."

Skip to 3:38 in the youtube clip to hear it with the music. The lo-fi track used to demonstrate is sick, and makes it that much more amazing to watch.


(via physicistsneedlovetoo)

747 notes