Veritasium
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Which Hits The Ground First, Something Light or Heavy?
A basketball and a 5kg medicine ball are dropped simultaneously. Which one hits the ground first? It seems obvious that the heavy one should accele...
1veritasium
commented:
The Difference Between Mass and Weight
There is a common perception that weight and mass are basically the same thing. This video aims to tease out the difference between mass and weight...
1veritasium
commented:
Yup, no one mentioned friction so I didn't deal with this, but I intended too. Think about pushing a car to get it going and then running in front and pushing it back to stop it. Now friction is helping you, but it's similarly difficult to accelerate as it is to decelerate. Cars really have very ...
Acceleration of a Bungy Jump
When is the acceleration greatest during a bungy jump?
1veritasium
commented:
Here's the thing, kx is not independent of mg. In order to slow down, kx must be greater than mg, then you need to keep extending the spring until you stop. By this point kx will be greater than 2mg. Proof: set gravitational potential energy = spring energy at full extension: mg(l+x) = 0.5*kx^2 [...
World's Longest Vertical Straw
What is the longest drinking straw that you can actually drink out of? Well in this video, we put the theory to the test. We started off with a one...
1veritasium
commented:
I think multiple breaths are required - you just try not to let the pressure in your mouth drop as you breath out.
Slinky Drop 2
Some months a go I filmed a slinky falling in slow motion. Now I have interviewed the public about what they expect to happen for ABC TV's Catalyst...
1veritasium
uploaded
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4 days ago
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2 days ago
1veritasium
commented:
coming soon...
Why Are Astronauts Weightless?
http://www.abc.net.au/catal...
I have been working with Catalyst on ABC1 to bring some Veritasium to Australian TV. In this segmen...
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2 days ago
1veritasium
commented:
um, we don't need gravity to digest food. Smooth muscle lining your digestive tract keeps the food moving.
Regelation of Ice
When pressure is applied to ice, its melting point is reduced so it turns to water. When the pressure is removed, however, it turns back into ice. ...
1veritasium
commented:
I drove a long way to the outskirts of Sydney and got ice from an ice sculptor - they freeze their own ice in freezers that keep the water moving on top. This means that instead of freezing the top and edges inwards, trapping the air, it freezes from the bottom up and remains clear.
Gyroscopic Precession
NOTE: This video will appear in a playlist on Smarter Every Day hence the references to Veritasium. Destin does lots of cool science stuff - check ...
1veritasium
uploaded
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6 days ago
1veritasium
commented:
yes, but this is vector multiplication - a cross product to be precise and so order does matter. I can't believe I got this wrong. It's like one of those silly mistakes you make on a test.
Spinning Disk Trick
Objects hang heavy side down, but what happens when you spin an asymmetrically weighted disk - well the heavy part actually rises to the top. Why i...
1veritasium
commented:
lol - yeah I'm working hard on the answer! I may have some additional data to post up here to give viewers more to go on...
Are You Lightest In The Morning? (Daily Weight Fluctuations)
Are you heaviest at night before you go to bed and lightest in the morning? I tried to tease out the factors to figure out what really causes weigh...
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1 week ago
1veritasium
commented:
I've done the follow up already! - and I have the climate change stuff on my computer but I haven't edited it yet...
Where Does The Sun Get Its Energy?
The sun has been producing light for about five billion years but where does all its energy come from? The most common idea is that the sun is burn...
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1 week ago
1veritasium
commented:
It doesn't. It just keeps losing mass - but because it's so huge, it's only lost 0.04% of its mass over its 5 billion year life span (which is equivalent to 113 Earths in case you're wondering).
Basic Saucer Physics (a video response)
This is not part of the actual course about humans.
It's rather a video response to http://www.youtube.com/watc..., an earthling video...
1veritasium
favorited
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1 week ago
1veritasium
commented:
Simply amazing!
The Spinning Disk Trick... Explained
This is a response to a video by one of our favourite youtubers, Veritasium. Watch the original video here: http://www.youtube.com/watc......
1veritasium
commented:
I really like the disk you made! And nice segment with the ball and dog!
Why Do You Make People Look Stupid?
Raw interviews: http://www.youtube.com/watc...
The question has arisen often enough that I thought I'd answer it. If you hold views tha...
1veritasium
commented:
why are those words capitalised? And do you know what they mean?
Spinning Tube Trick Explained
When a tube spins with an X and an O labelled at either end, why do we see only one letter during the rotation?
1veritasium
commented:
From underneath, the tube rotates clockwise. So the spin of the tube is again opposite the rotation but now for the other letter. There is a good explanation of this in one of the video responses on the original video so check it out if this doesn't make sense.
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no, it really is true. Do the experiment. You can see in this video that they certainly do not land half a second apart. Things like not being dropped perfectly simultaneously and from the exact same height play a bigger role in this case than air resistance.