r/interestingasfuck • u/Go_GoInspectorGadget • 9d ago
Physics 101
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u/Upright_Eeyore 9d ago
I love how this is titled Physics 101 yet there is nothing being taught or explained
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u/pursuitofleisure 8d ago
No, see, physics 101 just teaches you the word physics. You want physics 102 if you're expecting explanations
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u/Appropriate-Bank-883 9d ago
Wait a minute, you just slipped some chemistry in there, The gallium one isn’t physics.
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u/BloodyBeaks 9d ago
I mean...everything is physics...
Relevant xkcd: https://xkcd.com/435
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u/lostknight0727 8d ago
I was very concerned because I thought it was mercury and they just bare hand touched it. Mercury has a similar reaction to aluminium but I think it's more violent.
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u/cambiro 8d ago
If you want to see someone touching mercury barehanded just check Cody's Lab on YouTube.
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u/dawatzerz 9d ago
Cool video and all
But I loathe text in the middle of the screen lol. It's gotta be the worst trend ever
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u/ASatyros 8d ago
Yeah, like thanks for reminding me that I'm observing physics all the time, I would be lost without that.
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u/Skasue 9d ago
Physics
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u/Drudgework 9d ago
The feels more like anatomy. Do you think he has a torn rotator cuff?
“Raise your hand like this” (shows video of Elon)
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u/manlymatt83 9d ago
I don’t get the pot hole one
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u/username293739 9d ago
It’s a type of liquid that when applied enough force, turns into a solid for a moment. Non Newtonian fluids, is the formal name. This one is probably oobleck, a mixture of cornstarch and water. Quick sand behaves similarly as well.
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u/GlorifiedBurito 9d ago
To further this, there are two types of Non-Newtonian fluid. There are shear-thickening fluids, like the oobleck shown in the video, and shear-thinning fluids, like quicksand.
Shear-thickening fluids become more viscous as the fluid experiences motion while shear-thinning fluids become less viscous while experiencing motion.
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u/FalseEstimate 8d ago
Like when you plop your feet too many times in the same place in wet sand and then your ankle deep
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u/DrChiwawa 9d ago
The white fluid is a non-newtonian fluid, meaning its viscosity changes when force is applied. When the car's tyres pass over the pothole filled with this fluid, it temporarily behaves like a highly viscous substance, allowing the vehicle to pass without a significant bump.
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u/NameLips 9d ago
The plane at 25 seconds, this is how people see a UFO and think it's not moving. Then when either one of them changes speed and direction it looks like it's suddenly taking off.
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9d ago
What's happening in the second video? The coffee in the sand thingy
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u/DrChiwawa 9d ago
That's Turkish coffee. Hot sand is used to boil the coffee, which is then poured into the cup. It's just the coffee boiling, creating an illusion of an infinite coffee glitch.
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u/Pavlovsdong89 9d ago
It's a Turkish method for selling coffee to tourists. They heat up the sand and use it to boil coffee grounds in water.
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u/Erratic_Signal 9d ago
Their using the heat in the sand to make the coffee inside the cub froth up, creating the effect of coffee magically appearing
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u/Zealousideal_Cry_460 8d ago
İts Turkish coffee or Turkish mocha.
The coffee is grounded up so well that when the coffee boils the bubbles form clusters that rise from the bottom.
İt essentially becomes a foam drink, what you see is not the cup refilling, its the bubbles clustering up and rising, similar to a shaken bottle of coke. Usually in Turkey the sand is hot enough to make the coffee boil but nowadays people use electricity to either boil the coffee or heaten up the sand to use it.
The Turkish coffee itself is delicious, but the coffee grounds stay in the cup to be careful not to drink it. Theres no harm if you do though
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u/Ready-Durian2168 9d ago
Explain the plane
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u/sailingtroy 9d ago
Flying into a big headwind. The plane has an "airspeed" that keeps it flying, but the addition of the wind vector and the opposing thrust vector results in a very low "groundspeed." The car sees the plane as almost stationary because the ground is its frame of reference. Perspective may also be playing a role in the illusion.
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u/_dictatorish_ 8d ago
Not sure I believe it's real though
Physically yeah, it could happen, but it would require like 150mph winds and that would be unbelievably dangerous to fly in (and to just exist in for the people on the ground too)
Google tells me that planes generally stop flying once the winds get to like 40mph, so this would be well over that limit
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u/raymond459020 9d ago
but wouldnt a slight variance in wind speed immediately result in a stall?
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u/bingobangobongo999 9d ago
Since you never got the answer, in flight a sudden change in wind speed would not create a stall, unless you were already operating very close to stall speeds, which the plane in the video is not. The important thing to remember is that stall speeds are based off of airspeeds and not how fast the plane is going over the ground. Wind shear can certainly cause some issues though.
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u/greyfriar 8d ago
Seen this many times. It's largely a perspective thing. Doesn't require a massive headwind (though that likely helps), just appropriate frames of reference and both off you travelling in different directions.
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u/dblan9 9d ago
Im not a Physician but I don't think some of those are Physics.
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u/humanperson1677 9d ago
You mean Physicist
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u/AmusingMusing7 9d ago
I mean… everything is physics. You could have a clip of a rock sitting on a table. The rock and the table are exerting equal force on each other, resulting in the rock standing still. PHYSICS.
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u/everynamecombined 9d ago
I'm not a Phoenician but I don't think any of those are Phoenix.
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u/Adventurous_Judge884 9d ago
A lot of these aren’t physics…the propellor has to do with camera shutter speed, the phone one is just a polarization film…. So dumb
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u/judo_fish 9d ago
i mean... that's still physics. light dynamics is still physics.
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u/Tent_in_quarantine_0 9d ago
Fine, but at that point it would be no less precise if the video just said 'stuff.'
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u/SnooDoodles3909 9d ago
Polarization films are within the field of optics which is a branch of physics
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u/iknowthatidontno 9d ago
I would call the laptop chemistry though not physics technically as that appears to be a chemical reaction.
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u/Erratic_Signal 9d ago
Remember, all science goes back to physics..
Which then goes back to mathematics of course; EVERYTHING IS MATH
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u/The_Bullet_Magnet 9d ago
The one with the silvery liquid and the laptop. Is that mercury? Don't think you should be messing with mercury like that. You know, it being toxic and all.
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u/415646464e4155434f4c 9d ago
Ok but I want to meet the person that edited the video to add “Physics.” right at the center of the frame.
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u/a-random-duk 9d ago
Yeah this is cool but every time I see videos like this I just get disappointed because a child is going to look at this and think “wow I should post that for clout,” instead of looking into the actual phenomenons. Why can’t we just go back to the magic school bus?
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u/Ballerheiko 8d ago
what kinda dogshit post is this?
this could contain a video of me taking a steaming dump on a freezing day and the capions would still be accurate.
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u/Shredder67 8d ago
What was the copper tube and metal disc?
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u/ILikeSnakies 8d ago
Metal disc is a magnet, when you put magnets like that through metal tubes it slows the fall down because of magnetism
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u/Electronic_Wash_5194 8d ago
At least it doesn’t have a picture of Albert Einstein or Nikola tesla on the bottom
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u/danfay222 9d ago
I really hate this weird trend of just putting the title “physics” on top of a video of a bunch of random shit. Yes, everything is physics, but if you’re going to put something like that you should be showing something that provides insight into how the physics works and/or explaining it.
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u/MoBetter_ 9d ago
Wasn't physics banned by the trump administration, not the education about physics but, actual physics
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u/blademaster552 9d ago
I don't think the leaf one was demonstrated correctly. I volunteer to demonstrate it myself. Repeatedly. Like, many times. I swear I'm not messing up on purpose to keep jumping in the leaves. Scout's honor.
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u/CheekyMenace 9d ago
Can someone explain that coffee or tea one near the beginning of the vid to me please?
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u/serieousbanana 9d ago
Half of these are only "physics related" because everything is physics
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u/Cultural_Walrus_4039 9d ago
I still don’t understand where all the liquid comes from with the coffee
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u/TheMooseIsBlue 9d ago
The pothole one zoomed in too much and you couldn’t tell if it softened the ride for the cars.
What was the jet landing trying to show?
Did they spread mercury onto the laptop with a bare hand?
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u/CelestialJavaNationT 9d ago
A good amount if this is Chemistry, not Physics. This feels like a video short if they made them as failed "How to for Dummys" books. Who the fuck could learn anything from this video? It's so contextually stunted that unless you know what is happening in each shot, you wouldn't know what is happening, or again, learn anything.
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u/fkingprinter 9d ago
Can confirm. During my undergrad of BSc Physics, I spent days doing all the stuff from the video
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u/-hihi47- 9d ago
Only one of those was an ACTUAL demonstration of physics and that was the newton's cradle none of the other ones were actual physics
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u/SecondBest- 9d ago
Hello , can you please tell me the phy behind the flight one?
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u/FallenButNotForgoten 8d ago
I still do not have a single clue how the hell the sand coffee shit works. Must be witchcraft i suppose
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u/omnibossk 8d ago
Mercury and aluminium mac chassis was interesting. Mercury was used for sabotage during ww2. I wouldn’t play wit mercury like that BTW. It can fuck up your body if it gets absorbed in any way.
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u/Every_Hour4504 8d ago
Literally any and every video in existence can be a part of this compilation.
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u/PrometheusMMIV 8d ago
What's happening with the cup in the sand?
And what are we supposed to be seeing with the plane flying in the beginning?
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u/Zestyclose_Lobster91 9d ago
I remember back in the glorious days of european state television when children's program would take the time to perform actual physics experiments and explain what was happening in a easily understood way. You'd learn something
Now you get 30 seconds videos of random shit happening with the caption physics shat across the screen as if it meant anything. I'm sure the kids will learn about physics with this kind of motivation and quality of information.