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Deleted member 656102
Hey i have these ideas in which i use helium baloons. I wonder how high does it go and what is the gravity force and pressure at this point?
Hydrogen.Robert Petrusic said:Is there an alternative to helium that can go higher?
A.T. said:Hydrogen.
Robert Petrusic said:Please, witouth the negative additude.
Actually i tought i was stupid but the tests said that i am a genius, so..Vanadium 50 said:Sorry, I know you've said you're a genius (https://www.physicsforums.com/threads/inventor-wanting-to-start-prototyping.964169/#post-6118245), but this won't work.
A balloon has to lift at least its own weight. The weight scales as the square of the radius. The lift scales as the cube of its radius. That means you want one big balloon and not multiple small balloons.
Robert Petrusic said:Actually i tought i was stupid but the tests said that i am a genius, so..
The problem with one big baloon is that this way the cable would be long 40 kilometers.
What do you mean about baloon needing to lift its one weight, what about zeppelins? They carried weight.
ZapperZ said:Quick, clarifying question: Are you familiar with the concept of buoyancy and Archimedes Principle?
I think there are people who have responded to you and assumed that you know this. I'm not so sure that you do.
Zz.
Robert Petrusic said:No i don't know.
So you seem like a reasonable guy.
Can you tell me in common english what's the problem with this?
Edit: If you carry one killo at a time its progress.
It is not. However, we decided not to copy the entire Wikipedia here.Robert Petrusic said:I came to this forum to look for explanations and ideas for my inventions, didnt know this was a forum only for PhD's in Physics.
Calculate! You have weight, which gives you the amount of gas needed in dependence of height. Then take into consideration, how much your material can be stretched to compensate for the decreasing air pressure. We are not a substitution to Google.Robert Petrusic said:So to get back to explaining... what's the problem with this?
fresh_42 said:It is not. However, we decided not to copy the entire Wikipedia here.
fresh_42 said:Calculate! You have weight, which gives you the amount of gas needed in dependence of height. Then take into consideration, how much your material can be stretched to compensate for the decreasing air pressure. We are not a substitution to Google.
Robert Petrusic said:i have 300 different ideas for inventions, and i didn't learn physics in school. Don't feel like talking to google for 2 years to find out, but seems that computers are much more friendly than humans.
Yeah, weird. Okay, thanks everybody for trying to help this person learn how to fish!ZapperZ said:Edit: After I wrote all that, it looks like the OP has "left the building"! :)
The maximum height a helium balloon can reach is determined by a few factors, such as the size of the balloon, the amount of helium it contains, and the atmospheric conditions. On average, a helium balloon can rise up to 30,000-40,000 feet before it pops due to the decreasing air pressure and expanding helium gas inside.
Technically, no. Space is defined as starting at an altitude of 62 miles above the Earth's surface. Most helium balloons cannot reach this height as they will pop before reaching it. However, some specialized balloons with advanced materials and designs have reached heights of 100,000 feet or more, which is considered the edge of space.
Helium balloons rise because of the principle of buoyancy. Helium is less dense than the surrounding air, so it creates an upward force that lifts the balloon. As the balloon rises, the air pressure decreases, causing the helium gas inside to expand and the balloon to rise even higher until it reaches an altitude where the air pressure is equal to the pressure inside the balloon and it pops.
As a helium balloon rises, it experiences a decrease in air pressure and temperature. The air pressure decreases because the atmosphere becomes thinner at higher altitudes, and the temperature decreases due to the expansion of the helium gas inside the balloon. As a result, the balloon will continue to rise until it reaches an altitude where the air pressure and temperature are too low, causing it to pop.
While helium balloons have been used for high-altitude research and exploration, they are not suitable for space exploration. Space is a vacuum, and helium balloons require air to rise. Once in space, a helium balloon would not be able to lift or maneuver, making it impractical for space exploration purposes.