I uploaded a version of this video yesterday, but it had a big mistake in it, so we fixed it. But the good news is that this version is 100% full of good science. Enjoy!
In the comment section of the outdated video, I made a "nooo" comment on the words "oxygen molecule", and it can still be seen in the pastebin. However, my response to the replies confirming that O2 is indeed a molecule, got lost. I responded something along the lines of "I believe that it's called "dioxygen" because there are 2 oxygen atoms" (the atoms forming the dioxygen molecule). It was brave to edit a whole portion of the video for that mistake. I applaud you for that.
Oxygen is understood to mean oxygen's simplest elemental form, which is the two atom molecule. Unless otherwise specified, "oxygen" as a substance name refers to O2, with no need for a prefix to tell us that there are two atoms. Single atom oxygen is unstable in our atmosphere, and three atom oxygen is called ozone. The terminology also works the same way for nitrogen, hydrogen, and the halogen family, where the element name refers to its default elemental form, as a homonuclear diatomic molecule. Single atom forms of these elements are also unstable, so the two-atom form is what the element name means by default.
Also thanks for providing subtitles for that balloon guy Doug. He was terribly hard to understand, what with all that perfectly accent free english he spoke at an audible volume. Now if I only knew what the host said, I didn't get any of it.
You remind me a bit of smarter every day. Good production quality and editing and audio. Plus, I learned something on this, my first video I have seen on this channel. Subscribed.
Made physics so much fun! I always thought physics can be fun it just needed someone like you to clarify it and make it look so. Thanks man this was really a matter of understand or death for me as a student .love from Sudan
Thumbs up! Another informative way to explain this would be to recast the ideal gas law in terms of density - i.e. pressure ~ density * temperature. An additional, interesting notation would be to explain the role of the decreasing ambient density & why we can't fly right into space!
The 30 second long DropBox ad was objectionably long the first time I saw it. It was waaaaay too long the second, third and forth time. Still I thank you for your vids.
You could mention that altitude is maintained when the total mass of the balloon and the air inside it equals the amount of air it displaces. To increase altitude i.e., get up where the air is thinner, the air inside the balloon has to get hotter.
Close, but not quite. The mass of the air inside and outside the balloon can remain the same at all altitudes. It is the relative weight of the air inside the balloon, not its mass, that causes it to rise when heated.
As mentioned, weather balloons don't have a hole at the bottom, so they keep getting bigger until they burst. Unless.... They enter a cloud with super-cooled water drops in them, and start accumulating ice. Then they get heavy and start to fall- into warmer air where the ice melts. And they can bounce around for hours around the same height, and if they are fitted with a radar reflector, they make a great impersonation of an unidentified aircraft in distress.
well done but as nitin said it already i think there is a mistake too at 5.10 about why ships float, the weight of displaced water is equal to the weight of ship, the reason is density, ship has overall lower density due to its air filled bottom. This problem came up on the physics girl channel and even I had it wrong :'(
I try to explain this to people as often as I can; we live at the bottom of our ocean at air, and that gravity is what makes planes (and balloons) fly.
I would disagree on gravity being the reason planes fly. Gravity is one of the forces to account for in airplane flight, but it has nothing to do with the reason the wings generate lift, or the reason the engines generate thrust. You could in theory fly a plane in a zero gravity environment with the air at uniform density, on the same working principles that actual planes use to fly. The same cannot be said for aerostat aircraft like balloons. An aerostat aircraft (lighter than air) like a balloon or blimp needs a pressure gradient in the surrounding air to be capable of floating in the air. A pressure gradient that is generated because of gravity and every layer of air, supporting the cumulative air above it. An aerodyne aircraft (heavier than air), like an airplane or helicopter could in theory work in a zero gravity environment with initially uniform air pressure and density, if it were built for it. The shape of an airplane wing, and the arrangement of helicopter rotors are built with offsetting gravity in mind, so it would be difficult to fly a standard toy aircraft on the ISS. You'd need a neutral shaped wing with bidirectional ailerons, for an airplane to control its flight in a weightless environment. A drone is probably a more practical aircraft for this experiment, if its propellers could be spun in both directions.
haha how many takes did it take you to keep a straight face while filming the scene with the helium voice ? I legit had to watch that part about 5 times before I could listen to the explanation properly; I couldn't stop laughing.
Ok, I get it, if you want to lift a heavy object, set it on fire! Now I don't need to ask my friends to help me move anymore, all I need is a canister of petroleum! Thanks, IOTBS! :D
Is that ballon fiesta your at in the video in Albuquerque, New Mexico? It looks like it, and if it is I am going to scream. I live very few hours from there and went this year.
I thought a boat on a balance beam versus the water it displaced would be even. The illustration at 5:13 has the weight of the displaced water being greater than the weight of the ship.
Thanks, Joe. I love it when people use the gas law correctly. People tend to forget n, but that's the most important part! n is the molecules whose behavior we are explaining.
Nuclear power flying car balloon with propulsion propellers would be cool. Only need to hover like 10-20 etc ft off ground. There is helium space balloon now lifting considerable weight.
3:50 Let this be a lesson to all us smart people. When asking a "normal" person what the mass of something is just say "How heavy is it?". They may not know the answer but they will know what your talking about then.
No, the heaviness or 'weight' of an object does not indicate the mass, just as you would have the same mass on earth as you would on the moon but a different weight
You weren't there the day I was. I have picture of the ballon you're in. It was apart of the balloon glow the morning I was there. It went up before the sun was up.
+SuchADumbUsername your from New Mexico? I did the same thing, I knew it was the balloon fiesta. I live in las cruces and I go to the fiesta many times.
+pranao walekar Balloons travel at the mercy of the wind. Winds move different directions at different altitudes, though, and experienced pilots can read those winds and navigate the balloon up and down to travel on different air currents. In some of the time-lapses I shot, you can actually see balloons moving in different directions at different altitudes. It's pretty cool. Thanks to the mountains and valleys surrounding the city, Albuquerque, NM (where this was shot) actually has some really special winds that are great for ballooning. It's called the "Albuquerque Box" and when conditions are just right, balloons can return to exactly where they take off! Here's a cool explainer on that: wildcardweather.com/2014/10/09/the-albuquerque-international-balloon-fiesta-and-the-albuquerque-box/
Hi guys! I am looking for blueprints of a bulbous hot air balloon envelope or bag. Preferably between 7-15 gores. Anyone knows where I can find that? Thanks for sharing, video uploader! Thomas
If my palms and feet were to release large amounts of heat so as to drastically increase the temperature and thus lower the density of air below my feet and hands, would I be able to fly up kinda like iron-man? If so, how much heat should I release? (assume average outside temperature and pressure and that I weigh an average of 60kg)
+Rick Gray SF6 is one of the most potent greenhouse gases on Earth, WAYYYYY worse than CO2 or methane. It does some crazy stuff to your voice but I don't feel good about using it for fun. Although it might get my voice deep enough that only elephants could hear it?
@@besmart Is it systematically more dangerous to inhale dense gasses to talk like Satan, than it is to inhale helium to talk like a chipmunk? Due to the fact that helium will automatically vent from your lungs, while SF6 or Krypton you would have to actively exhale to get rid of it.
So if we had a high jump competition on a flying stadium 10,000 meters above the ground, would the the high jumpers jump higher than on the ground, because the pressure is lower?
John, the winds travel in different directions, at different altitudes. We go up and down to find the steering winds.We have competitions where you have to steer to a target and drop a bean bag on the target. You cannot fly in a hot air balloon that great of a distance, don't carry that much fuel. Average flight is about an hour and a half.
Gautham Thampy then make it bigger untill it works... a sphere of steel bars with a strong, airtight material around it. As you make it bigger, the volume will increase faster than the steel.
@@kalebbruwer The problem is that you need a pressure vessel to maintain the vacuum. And in practice, that structure will be more dense than the air itself, even when you evacuate it to a perfect vacuum. By using hot air or helium, which can be at nearly the same pressure as the surrounding air, it allows for a much lighter container to contain the less dense region of space, which means we can actually take credit for the hot air or helium reducing the density and making aerostatic flight possible. Ever held a CRT monitor or television? It is HEAVY. There is a vacuum chamber inside, and you would think that would make it light. The structure of the tube is what makes it heavy. All that glass and metal housing, to contain the absence of air.
Because the bottom of a hot air balloon is vented, rather than sealed. Pressure will aim to equalize between regions of space filled with gas, that are vented to one another. You need to seal a container of gas, to have it be at a different pressure than the surrounding ambient air, and you would depend on the structural forces of its container to maintain that pressure.
The hot air inside the balloon, pushes other air out of the bottom, so it can be less dense than cold air and fill the balloon envelope with less total air molecules. It doesn't push hot air out the bottom, it pushes initially-cold air out the bottom, and heats up less total mass of air.
+Mattias Kågström Yes! Unfortunately the container around the vacuum would weigh more than the difference between the weight of the vacuum and the air around it.
+Mattias Kågström If you could make the container light enough, this would be a great idea. But making a container that could withstand the weight of the atmosphere without collapsing usually means that the container is too heavy to float. If you want to see what the weight of the atmosphere does to a vacuum in a rigid container, check this out: th-cam.com/video/Zz95_VvTxZM/w-d-xo.html
I uploaded a version of this video yesterday, but it had a big mistake in it, so we fixed it. But the good news is that this version is 100% full of good science. Enjoy!
what was the mistake?
+Fed Ff I did a bad job of explaining why air pressure is greater near Earth and people were very confused. It was an… 😎 *air-head* moment
+It's Okay To Be Smart you need more subscribers love this channel
Lol they fixed a mistake that I pointed out :D
good job)
+It's Okay To Be Smart ty for the helium voice
It was so nice meeting you at the balloon fiesta Joe! I love how it's taken us both this long to finally upload our videos 😂
+Mikayla Snow I know! But balloons are cool all the time, right?
Great to meet you too!
In the comment section of the outdated video, I made a "nooo" comment on the words "oxygen molecule", and it can still be seen in the pastebin.
However, my response to the replies confirming that O2 is indeed a molecule, got lost. I responded something along the lines of "I believe that it's called "dioxygen" because there are 2 oxygen atoms" (the atoms forming the dioxygen molecule).
It was brave to edit a whole portion of the video for that mistake. I applaud you for that.
Oxygen is understood to mean oxygen's simplest elemental form, which is the two atom molecule. Unless otherwise specified, "oxygen" as a substance name refers to O2, with no need for a prefix to tell us that there are two atoms. Single atom oxygen is unstable in our atmosphere, and three atom oxygen is called ozone. The terminology also works the same way for nitrogen, hydrogen, and the halogen family, where the element name refers to its default elemental form, as a homonuclear diatomic molecule. Single atom forms of these elements are also unstable, so the two-atom form is what the element name means by default.
Thanks for making the corrected version of the video.
Eugene! Love your videos :)
Great videos Eugene!
bs
I have a tendency of smiling in spite of myself when I watch these videos. You're making the world a better place, keep it up!
wow i have a better understanding of temperature and pressure from this video thanks!!! was so confused in physcis 101 and 102
You get a like because of the way you did your sponsor! :D
Also thanks for providing subtitles for that balloon guy Doug. He was terribly hard to understand, what with all that perfectly accent free english he spoke at an audible volume. Now if I only knew what the host said, I didn't get any of it.
Roses are red,
Violets are blue,
Get in the van
It was awesome meeting you at AIBF and talking to you about cameras! 😁
Glad to see you were in ABQ! Wish I could have gone this year :(
i love this video so much for so many reasons
Oh right, the old "weaker gravity" mental trap. I thought that was fishy yesterday, good job fixing it!
My 3 year old daughter is obsessed with hot air balloons and how they work and we watch this video at least twice a day 🙌🏼❤️
I hope you enjoyed my home town, Joe! We had great weather for you this year. Come back soon! (and stay curious! ;-) )
You remind me a bit of smarter every day. Good production quality and editing and audio. Plus, I learned something on this, my first video I have seen on this channel. Subscribed.
I hope you liked Albuquerque and the Balloon Festival! I love your videos!
Made physics so much fun! I always thought physics can be fun it just needed someone like you to clarify it and make it look so. Thanks man this was really a matter of understand or death for me as a student .love from Sudan
Thank you. Fascinating. Still having trouble finding any info on how ancient balloons kept all that heat going without tanks.
Riding in a ballon is amazing. The New Mexico Balloon Fiesta is wonderful.
4:20 FIRE cracked me up..
Helium makes everything more interesting and funny, unlike SF6 which makes everything creepy
+Flying Spaghetti Monster And also potentially life threating .
+Flying Spaghetti Monster And also potentially life threating .
+Flying Spaghetti Monster All hail the spaghetti monster
I love to watch videos of balloons hitting power lines
The big blue chicken… OMG, Galinha Pintadinha!
Excellent episode! We live in Albuquerque and have been to so many fiestas. It's a blast. Planning to be there again this year. Hope we see ya there!
Thumbs up! Another informative way to explain this would be to recast the ideal gas law in terms of density - i.e. pressure ~ density * temperature. An additional, interesting notation would be to explain the role of the decreasing ambient density & why we can't fly right into space!
The 30 second long DropBox ad was objectionably long the first time I saw it. It was waaaaay too long the second, third and forth time. Still I thank you for your vids.
You could mention that altitude is maintained when the total mass of the balloon and the air inside it equals the amount of air it displaces. To increase altitude i.e., get up where the air is thinner, the air inside the balloon has to get hotter.
Close, but not quite. The mass of the air inside and outside the balloon can remain the same at all altitudes. It is the relative weight of the air inside the balloon, not its mass, that causes it to rise when heated.
As mentioned, weather balloons don't have a hole at the bottom, so they keep getting bigger until they burst. Unless.... They enter a cloud with super-cooled water drops in them, and start accumulating ice. Then they get heavy and start to fall- into warmer air where the ice melts. And they can bounce around for hours around the same height, and if they are fitted with a radar reflector, they make a great impersonation of an unidentified aircraft in distress.
Beautifully presented!
Thank you, just subscribed! 🌟
A thing on my bucket list is going to hot air balloon ride. Unfortunately I'm also afraid of heights.
I lost it at the fire part xD I'm always happy to see these videos, they're so good
Keep making videos it can help my child study
You are still awesome, I listen to this while i work :)
This is one of those videos where I feel like I understand even less than before I watched it. 😂
~:~
cool, but how does it steer ? and coriolis effect when climbing descend in northern and southern hemisphere ? :)
All your videos are awesome, but this one was extra awesome.
Today at school we had to write a thing in our journals about a hot air balloon ride. Coincidence? I THINK NOT!
Then you must be dumb, it is a coincidence
Of course it's a coincidence, this comment is a joke.
Have a nice day!
This video was uplifting.
well done but as nitin said it already i think there is a mistake too at 5.10 about why ships float, the weight of displaced water is equal to the weight of ship, the reason is density, ship has overall lower density due to its air filled bottom. This problem came up on the physics girl channel and even I had it wrong :'(
I try to explain this to people as often as I can; we live at the bottom of our ocean at air, and that gravity is what makes planes (and balloons) fly.
I would disagree on gravity being the reason planes fly. Gravity is one of the forces to account for in airplane flight, but it has nothing to do with the reason the wings generate lift, or the reason the engines generate thrust. You could in theory fly a plane in a zero gravity environment with the air at uniform density, on the same working principles that actual planes use to fly. The same cannot be said for aerostat aircraft like balloons.
An aerostat aircraft (lighter than air) like a balloon or blimp needs a pressure gradient in the surrounding air to be capable of floating in the air. A pressure gradient that is generated because of gravity and every layer of air, supporting the cumulative air above it.
An aerodyne aircraft (heavier than air), like an airplane or helicopter could in theory work in a zero gravity environment with initially uniform air pressure and density, if it were built for it. The shape of an airplane wing, and the arrangement of helicopter rotors are built with offsetting gravity in mind, so it would be difficult to fly a standard toy aircraft on the ISS. You'd need a neutral shaped wing with bidirectional ailerons, for an airplane to control its flight in a weightless environment. A drone is probably a more practical aircraft for this experiment, if its propellers could be spun in both directions.
Fantastic video! Also love the Balloon Fiesta :)
This video really did lift my spirits ^^
haha how many takes did it take you to keep a straight face while filming the scene with the helium voice ? I legit had to watch that part about 5 times before I could listen to the explanation properly; I couldn't stop laughing.
The error is the nature of the air pressure, beginning at 1:45 mark.
Ok, I get it, if you want to lift a heavy object, set it on fire!
Now I don't need to ask my friends to help me move anymore, all I need is a canister of petroleum! Thanks, IOTBS! :D
Mind Blown! Always learning new things, thanks
This channel is so awesome!
excellent! wonderful video~ Thank you!
Awesome video!
Is that ballon fiesta your at in the video in Albuquerque, New Mexico? It looks like it, and if it is I am going to scream. I live very few hours from there and went this year.
0:13 That inicial joke was no kid's game dude X''D
I thought a boat on a balance beam versus the water it displaced would be even. The illustration at 5:13 has the weight of the displaced water being greater than the weight of the ship.
Thanks, Joe. I love it when people use the gas law correctly. People tend to forget n, but that's the most important part! n is the molecules whose behavior we are explaining.
Very good episode but the Right brothers are responsible for Powered Flight.
Great video
Cool video! I like balloons aswell!
Subscribed! Great video! It really helped me understand :)
Should've mentioned you were in Albuquerque for the Balloon Fiesta instead of just a text mention..
Nuclear power flying car balloon with propulsion propellers would be cool. Only need to hover like 10-20 etc ft off ground. There is helium space balloon now lifting considerable weight.
I have no idea what is the difference between the incorrect and correct version
Still blows my mind how much weight is above our heads as just _air._ What're the physics that it doesn't crush us?
3:50 Let this be a lesson to all us smart people. When asking a "normal" person what the mass of something is just say "How heavy is it?". They may not know the answer but they will know what your talking about then.
No, the heaviness or 'weight' of an object does not indicate the mass, just as you would have the same mass on earth as you would on the moon but a different weight
The guy just gave a different unit for mass of air.
How it moves horizontally
You weren't there the day I was. I have picture of the ballon you're in. It was apart of the balloon glow the morning I was there. It went up before the sun was up.
Was one of the shots taken in Brazil?
I guess now the world will know the terror of the Galinha Pintadinha Balloon
+SalameeQueijos No, those were all in Albuquerque, NM! But there were lots of Brazilian balloon teams there, including Galinha
I'd recognize my home state & its balloon fiesta anywhere. I miss it, but hey, it would have been real neat if I went this year & saw you!
+SuchADumbUsername your from New Mexico? I did the same thing, I knew it was the balloon fiesta. I live in las cruces and I go to the fiesta many times.
It's the little things that make New Mexicans excited. :)
SuchADumbUsername exactly
i was always curious about how you navigate the balloon. don't you drift away due to winds? Is there a way to control the horizontal direction?
+pranao walekar Balloons travel at the mercy of the wind. Winds move different directions at different altitudes, though, and experienced pilots can read those winds and navigate the balloon up and down to travel on different air currents. In some of the time-lapses I shot, you can actually see balloons moving in different directions at different altitudes. It's pretty cool.
Thanks to the mountains and valleys surrounding the city, Albuquerque, NM (where this was shot) actually has some really special winds that are great for ballooning. It's called the "Albuquerque Box" and when conditions are just right, balloons can return to exactly where they take off! Here's a cool explainer on that: wildcardweather.com/2014/10/09/the-albuquerque-international-balloon-fiesta-and-the-albuquerque-box/
+It's Okay To Be Smart. That's very interesting. Thanks for the info and keep up the great work!
Balloons freak me out. How do you know where they will land?
You don't it might land in your neighborhood it happened to me once
+scottdpt12 They're at the mercy of the wind! But experienced pilots know how to read the winds at different altitudes and use them to navigate
Try it, you will love it. One of the most relaxing things you will ever do.
Hi guys!
I am looking for blueprints of a bulbous hot air balloon envelope or bag.
Preferably between 7-15 gores.
Anyone knows where I can find that?
Thanks for sharing, video uploader!
Thomas
Wait wasn't this posted a day or two ago?
Fun fact: There is no angry way to say "bubbles"
I lived in Albuquerque my whole life but never been in a air balloon
aurelio madrid I've lived in NM for like 6 years never did either. Now that I moved away, I'm wanting to
I was expecting it to talk about directional control too.
That's what I'm wondering. Do they just wait for winds to align with a path of grassland? How does the pilot control the course and landing location?
4200KG.blaze it
If my palms and feet were to release large amounts of heat so as to drastically increase the temperature and thus lower the density of air below my feet and hands, would I be able to fly up kinda like iron-man?
If so, how much heat should I release? (assume average outside temperature and pressure and that I weigh an average of 60kg)
Joe, can you get some sulfer hexaflouride?
+Rick Gray SF6 is one of the most potent greenhouse gases on Earth, WAYYYYY worse than CO2 or methane. It does some crazy stuff to your voice but I don't feel good about using it for fun.
Although it might get my voice deep enough that only elephants could hear it?
+It's Okay To Be Smart It can also asphyxiate you quite easily.
@@besmart Is it systematically more dangerous to inhale dense gasses to talk like Satan, than it is to inhale helium to talk like a chipmunk? Due to the fact that helium will automatically vent from your lungs, while SF6 or Krypton you would have to actively exhale to get rid of it.
My younger cousin still doesn't know how that much air could be above our heads without it killing us.
what a great video!!!!!!!!!
Should've come to Bristol. We have the real balloon festival.
+Jonas Hamill I dunno, I'm sure Bristol's great, but Albuquerque's is the biggest in the world ;)
It's Okay To Be Smart, thanks for sticking with the facts.
by the way, R in the equation is 8.31. it is a constant. :)
It's based on Boltzman's constant, except it is for the scale of the mole instead of the individual molecule.
How far did you land?
Is that Perpetuum Mobile I hear in the background?
So if we had a high jump competition on a flying stadium 10,000 meters above the ground, would the the high jumpers jump higher than on the ground, because the pressure is lower?
Perhaps the word floating would fit better than flying. (Damn phones, you can't edit your comments on them!)
+Mandiz3n Not significantly. Gravity is a high jumper's #1 enemy, not air pressure.
I guess so. And because the dendity is lower, there's also less air friction. That'll help as well.
+Mandiz3n If we are only taking buoyancy into effect then they'l jump lower. because air pressure is less that means that there is less pressure.
+Mandiz3n At that low of pressure the athlete would have altitude sickness. Unable to oxygenate his/her muscles and wouldn't perform well.
How do you steer ? Could I take it from California to Missouri and back?
+Gautham Thampy so it's depend on wind?
+Gautham Thampy oh i see, :v thanks
John, the winds travel in different directions, at different altitudes. We go up and down to find the steering winds.We have competitions where you have to steer to a target and drop a bean bag on the target. You cannot fly in a hot air balloon that great of a distance, don't carry that much fuel. Average flight is about an hour and a half.
0:59 Listen to the sentence carefully. It's confusing because it contains a non sequitur.
+The Goodly Dragon Is it that blimps are or are not filled with helium? Or that blimps are and regular hot air balloons aren't?
@@thegoodlydragon7452 Blimps are filled with helium, hot air balloons are filled with regular air.
if you make a vacuum chamber that, when depressurised, weighs less than its volume in air would, would that float?
Gautham Thampy then make it bigger untill it works... a sphere of steel bars with a strong, airtight material around it. As you make it bigger, the volume will increase faster than the steel.
Gautham Thampy surface area is ^2 and volume ^3 so eventually it will pass eachother.
Gautham Thampy a sphere is a strong shape
@@kalebbruwer The problem is that you need a pressure vessel to maintain the vacuum. And in practice, that structure will be more dense than the air itself, even when you evacuate it to a perfect vacuum. By using hot air or helium, which can be at nearly the same pressure as the surrounding air, it allows for a much lighter container to contain the less dense region of space, which means we can actually take credit for the hot air or helium reducing the density and making aerostatic flight possible.
Ever held a CRT monitor or television? It is HEAVY. There is a vacuum chamber inside, and you would think that would make it light. The structure of the tube is what makes it heavy. All that glass and metal housing, to contain the absence of air.
Why does the pressure between the outside and the inside have to stay the same?
Because the bottom of a hot air balloon is vented, rather than sealed. Pressure will aim to equalize between regions of space filled with gas, that are vented to one another. You need to seal a container of gas, to have it be at a different pressure than the surrounding ambient air, and you would depend on the structural forces of its container to maintain that pressure.
Wait, why did the hot air leak out the bottom in the first place? Isn't hot air supposed to keep rising in the first place? Explain please :/
The hot air inside the balloon, pushes other air out of the bottom, so it can be less dense than cold air and fill the balloon envelope with less total air molecules.
It doesn't push hot air out the bottom, it pushes initially-cold air out the bottom, and heats up less total mass of air.
You should make a video about potatoes
I just noticed that Joes's eyes are kinda red in the dropbox commercial
Cool ass video
Fire!!!!!
haha I see what you did there at the end
so if less air in the balloon is the reason it goes up... shouldn't a vacuum have hell of a lot of lift?
+Mattias Kågström Yes! Unfortunately the container around the vacuum would weigh more than the difference between the weight of the vacuum and the air around it.
+deezynar so if we could do a airplane out of carbon nanotubes, and make a vacuum in the wings and shell, we could save a shit ton of energy :-D
+Mattias Kågström If you could make the container light enough, this would be a great idea. But making a container that could withstand the weight of the atmosphere without collapsing usually means that the container is too heavy to float.
If you want to see what the weight of the atmosphere does to a vacuum in a rigid container, check this out: th-cam.com/video/Zz95_VvTxZM/w-d-xo.html
needs a better title...
so its easier to find
Air is empty space...? I'm afraid I disagree. Empty space, as in outer space, isn't even actually empty.
How do balloon pilots control where they land?
Hot air makes things go up? Soo... what's keeping you down?
+Caleb Limb Great video though!
+Caleb Limb Gravity
+kevyn kollom i was just about to say that
+Caleb Limb The man.
The flying pig pilot guy is really weird. He is at lots of different events in my area.