the science of myth

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Mythbusters Physics: Relative Velocity

The Mythbusters tested what would happen if a ball was shot at 60 mph off the back of a truck travelling at 60 mph to see what would happen.

It became a perfect example of the relative nature of physics - showing that velocity can vectorially add together. 60 mph in one direction cancels the 60 mph in the other, meaning a net velocity of zero.

literature genres

Gryffindor: Anything gripping and Nonsense; at least it shouldn’t get boring. Gryffindors are only enthusiastic about books with a fluent story; otherwise they’d stop reading in the middle of the book. About the half of the Gryffindors actually read a lot of books; the others aren’t really passionate about reading.

Slytherin: Nonsense and Horror. Just like the Gryffindors, they hate stories that flatten down in the middle. Slytherins usually read a lot and share their muggle books (after the war against Voldemort, they got more tolerable with muggles and mudbloods), so they’re all reading the same books and nobody’s alone in their fandom.

Ravenclaw: The most of the Ravenclaws are fond of either dramas and non-fiction or real stories. They don’t really like made-up, surreal stories and fiction, except old tales and myths; they also read and write a lot of poems. Only a few purebloods read muggle books because the Ravenclaws usually like to buy the books themselves.

Hufflepuff: They’re having a soft spot for Comedy and schmaltzy Romance. The Ravenclaws find it pretty tasteless of the Hufflepuffs for liking kitschy books, but they actually just read them for fun. Hufflepuffs never really take novels they read in their spare time serious; that’s why they avoid creepy or serious texts. They basically read for amusement.

the houses as literature genres requested by anon

inbox is open!

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Collision Forces: Is the Impact of a Car Travelling at 100 mph the Same as the Impact Between Two Cars Travelling at 50 mph Each?

It seems to make intuitive sense that a head on collision between two cars would be worse than a collision between a car and a stationary object. Two vehicles moving against each other would surely add to make a larger force. 

But actually, the physics says each car’s change in momentum is the same regardless of whether an object is incoming or stationary. Furthermore, while the kinetic energy increases, it’s divided between two masses and ends up being the same. 

Mythbusters tested this and it can be seen in the gif set. 

The first gif shows two vehicles colliding head on while travelling at 50 mph each. While the second gif shows a car colliding with a stationary object at 50 mph. The damage is the same.

The last gif however shows what is assumed when two vehicles travelling at 50 mph should experience - a collision of 100 mph. 

It is clear that a crash at 100 mph is far worse than the head on collision of gif 1.

trigilis  asked:

Hi! I was wondering if you know of any videos that explain weight science a bit? Like, a 101 type thing would be perfect, but I'll take anything that talks about how weight =/= health (and preferably health =/= worth), fatphobia etc. I'm sure videos like that have to exist, but I can't find anything under this mountain of fatphobic bs... (Also, thank you so much for the great work you do, I absolutely adore your blog!)

I like this video by the Association for Size Diversity and Health! It uses a really cute metaphor about dog breeds to help explain the false assumptions of most weight science. Poodle Science!

And here is a very accessible science video by Dr. Linda Bacon about “Busting Myths on Weight and Health”

And here’s a podcast interview with Virgie Tovar, my fave radical fat babe. 

It’s easy to look back to the past, and laugh at those morons who used to think that the sun revolved around the Earth. One of the first things you learn in school is that planets revolve around the sun - not the other way around - because the sun is the real star of our solar system, in every sense of the word. And yet that’s not entirely accurate: Remember those solar system models, with the sun stuck on an immobile pillar, while all the other planets spin around it on wires? You know, every model of the solar system you’ve ever seen?

It’s wrong, and so is that diorama your stupid kid made that won second place at the science fair, losing out to a baking soda volcano. In reality, the sun is just another orbiting object, which also rotates around the true center of the solar system, the barycenter. What’s there? Nothing. Absolutely nothing.

5 BS Science Myths Your Entire View Of The World Rests On

Being in fandoms is so damn educational

I’m not even kidding. Thanks to my fandoms I am an expert in space, the bible, Ancient Greece, Greek myths, angels, demons, most areas of science, the geography of London, theoretical physics, figure skating and more. I also speak both Latin and Greek.

“What we need is a new myth. What we need is a new true story that tells us where we’re going in the universe. And that true story is that the ego is a product of pathology and that when psilocybin is regularly part of the human experience, the ego is suppressed. And the suppression of the ego means the defeat of the dominators, the materialists, the product peddlers. Psychedelics return us to the inner worth of the self, to the importance of feeling, immediate experience. And nobody can sell that to you and nobody can buy it from you, so the dominator culture is not interested in the felt presence of immediate experience. But that’s what holds the community together. And as we break out of the silly myths of science and the infantile obsessions of the marketplace, what we discover through the psychedelic experience is that in the body –in the body– there are Niagaras of beauty, alien beauty, alien dimensions that are part of the self, the richest part of life.”
Terence McKenna