Tag: science

bransonreese:

the-legit-alois:

slangwang:

bransonreese:

crystallotusfr:

bransonreese:

serpentking456:

notcaycepollard:

the twitter thread the artist created after this was one of the best situations i have ever seen in my whole life:

Somebody give this ignoramus a piece of actual shark skin and tell him to rub his face with it, let him find out just how “smooth” sharks really are.

Somebody did. I use it as a pillowcase because it’s so smooth.

But buddy.

Shark skin feels exactly like sandpaper. It is made up of tiny teeth-like structures called placoid scales, also known as dermal denticles. These scales point towards the tail and help to reduce friction from surrounding water when the shark swims. … In the opposite direction, it feels very rough like sandpaper.

((Here m8 https://www.floridamuseum.ufl.edu/fish/discover/sharks/basics ))

Buddy. It’s smooth. The link you sent me led to a website that described how smooth they are. I dunno, maybe you don’t know how to read?

this post is transcendent

lets take this guy to Sea World and throw him in the shark tank. “HOW SMOOTH ARE THEY NOW MOTHER FUCKER!!??!!?”

I’d just be like “they’re very smooth” and I’d swim out and citizens arrest you for attempted murder.

velvetyhugs:

teampokepals76:

gservator:

radglawr:

bishopmyles:

Nope.

when your teacher is trying to teach you how to cast fireball

+3 to Intellect

If anybody’s wondering what’s happening here, this clip made it onto Outrageous Acts of Science, and they explained that this teacher was demonstrating the Leidenfrost effect, which is basically when you place a droplet of a liquid on a surface that’s far hotter than its boiling point. The part of the drop touching the hot surface turns into vapor and forms a cushion that the rest of the drop rests on top of, which causes it to skid across the floor so quickly.

The substance the teacher uses in the video is liquid methane. But methane has a really low boiling point. Like, about −160 °C low. So once it touches the comparatively hot floor, the Leidenfrost effect comes into play, and it slides across the floor. The issue is though, methane is colorless, so you can’t normally see it. Thankfully (in this demonstration), methane is also very flammable, so he sets it on fire before dumping it onto the floor so you can see it as it moves.

Definitely a cooler demonstration of the Leidenfrost effect than dropping a little water in a hot pan.

Or hotter, if you like puns.

THANKS FOR EXPLANATION SCIENTIFIC SIDE OF TUMBLR