Rough back-of-the-envelope calculations to find out whether this is possible or not:Assume a twin sized mattress: = Volume of the mattress (): Density of Air () [at and at mean sea level] = Density of Helium () [Under the ^ same conditions]: Upward thrust due to displacement of air by the mattress: where = .So, according to these rough calculation, a double size air mattress filled with Helium at will be able to support [and this includes the weight of the mattress material] only .The weight of a typical air mattress is [1]. So we can see that the upthrust provided by the Helium isn't even enough to support the weight of the mattress, let alone a person's.My conclusion would be that it's not possible. And like Garrick said, rolling over while sleeping will have nastier results than usual.Even if one did manage to get a mattress of size enough to support a man's weight, there are several problems to deal with:You will have to be very careful while climbing into and moving around in the mattress.
If you move suddenly, you might find the mattress floating away rapidly or spinning [conservation of linear and angular momentum of you+mattress system]. Tethering the mattress might work, but then the whole novelty of a floating bed will be lost. =)When your body comes in touch with the mattress, heat will be transferred to the Helium which in turn will change its density and therefore the upthrust, making the system unstable.No.Helium at same air pressure and temperature as the air around it can only lift about 66 pounds per thousand cubic feet. That would be a cube 10 ft on each side. The actual temperature and pressure play a big part in the actual amount of lift.And increasing the pressure of the helium would REDUCE that lift a bit, due to the extra weight of the added helium.But before you do the math, you also need to consider the weight of the helium container ie; the balloon, that will reduce the overall “payload” weight.Only hydrogen (or a perfect vacuum) can lift more than helium.
But magnetism can get you sleeping while afloat. Need some cables to keep the bed straight though.Check out the "Floating bed" by Janjaap Ruijssenaars http://www.universearchitecture....1. Most likely if you are refering to Liquid helium. Density of air approx 1 gm/ litre, of Liquid helium, 125gGms/litreIf it is not Liquid, please read following:2. It is encased in a metal tank as against a balloon encased in rubber.The total density = Volume of tank /(mass of empty tank + mass of Helium ) If it is more dense than air, it wont float away.add, search, annotate, link, view, overview, recent, by name, random news, help, about, links, report a problem or get an account Maximum support by night, maximum room by day! but what about the heavy tog factor of modern day duvets thus denying you the high rise effect and thus no free room below! Oh my god and then there's the fact of matching bed UNDER colour to go with the interior decor!—stickyman, Plus you'd never be able to hold a party for fear of getting to *that* point of the evening and finding all your guests clustered in your room taking turns to make themselves sound like chipmunks whilst your bed for the night slowly deflates...—mark_t,
It would take more helium than that to lift even a single constraints, the "bed" would have to be nothing but a mylar or latex balloon filled with helium, and you'd have to remove all the bedclothes before it would float. Balloons don't make good beds -- ask anyone who's slept on an airAnd it's wipe clean! There goes the need for bedclothes! Sticky in the summer mind. I'd suggest hydrogen, but every dream would feature a voice screaming "Oh the humanity!". By attaching a tube you can make your patner inhale helium while they slumber. Hey presto - snoring that's funny.—nagga_nooch,Sunday Times "Eureka" section shows that one William Calderwood of Arizona has patent 4,888,836 on this very idea. move on Nadir, post the Helium toilet.—po, + Add to Wishlist You may also like: The Giant Inflatable Soccer Ball is the King Kong of blow-up spherical toys. This sucker features a 72-inch (6 foot / 1.83m) diameter and weighs a tad over eight pounds when deflated!
Everywhere you take this gargantuan soccer ball, heads are going to turn. Fashioned out of thick and durable plastic, the Giant Inflatable Soccer Ball can handle its fair share of swift kicks.At over 475 times larger than a regulation soccer ball, the Giant Inflatable Soccer Ball ensures your next pick-up game will be one for the ages. christmas gifts for kids gifts for the inner child gifts for the person who has everything Dimensions: 6' (1.83m) diameter! Weight: 8 pounds (3.62 kg) deflated Made from thick, tough plastic Sturdy inflation plug with one-way top-off valve Includes a small patch repair kit Watch our Giant Inflatable Soccer Ball video As you're well aware, we like big things at Vat19. We like jumbo paperclips, ginormous gummy worms, and toddler-sized gummy bears.So, when we saw this six-foot-diameter inflatable soccer ball, it was as if Eros himself waddled down from Mt. Olympus and shot us through the heart. We are simply smitten with this oversized soccer ball.
Check out the video below. The Giant Inflatable Soccer Ball is real. And if you are cowboy enough to recognize pure fun when you see it, you can own one too!If a gigantic soccer ball says anything, it's "KICK ME!"If it says anything else, it's "PUNCH ME!", "HEAD ME!", "TOSS ME!", "ROLL ME!", "JUMP ON ME!", and "THROW ME AT STEVEN WHEN HE'S NOT LOOKING!"The Giant Inflatable Soccer Ball lives for play, so give it what it needs! This sucker's skin is thick (literally) and will handle your abuse. Obviously, you shouldn't roll it over a bed of nails, but in our tests we didn't notice any issues when kicking it across our parking lot and concrete walking paths. This thing gets an A+ for durability!Filling up something as massive as the Giant Inflatable Soccer Ball takes a lot of air. In fact, it requires 195,283 cubic inches!A large (1.5") plug allows you to employ a variety of air pumps to handle the bulk of the inflation. Once she's near full, you close this plug and use the one-way top-off valve to get her über-plump.
What's the equation for the volume of a sphere? Yeah, we didn't know either. Turns out, it's (4/3)πr3. Plugging in the numbers for the mammoth 6-foot-diameter reveals that it is 91 times larger (in terms of volume) than a 16-inch diameter beach ball. Dang.Go big or go home. Well, we decided the house was too dirty and we couldn't afford a housekeeper, so we went with an inflatable so large that its mere sight makes us giggle.The Giant Inflatable Soccer Ball is kickable, punchable, rollable, and (according to the picture below) Atlas-able!We'll let you be the judge of that! Check out our "Greatest Hits" video below.Question: Is this thing real or is this some sort of April Fool's Photoshop thing?Answer: This is 100% real. Frankly, we would never kid about something this spectacular.Question: How long does it take to inflate? Will I pass out blowing it up?Answer: You should not try to inflate the Giant Inflatable Soccer Ball with your mouth. You will need an air pump of some kind. We suggest an air mattress pump, a vacuum that can be reversed, or an air compressor with blower attachment.
In our tests, it took about 6 minutes to fully inflate. Yeah, she's a big one.Question: But this is a lot more expensive than a 16" beachball!It's also a LOT bigger. Let's bust out some more math. The surface area of a 16" beachball is approximately 800 square inches. The surface area of the Giant Inflatable Soccer Ball is approximately 16,000 square inches. Thus, it requires 20 times more material! Plus, this material is far thicker than your average beach or pool ball.Question: You do realize that the entire world (outside the US) would call this a football?Answer: Yes, we know, we know. However, we blew our translation budget on our English-to-Bacon converter, so you'll just have to bear with us on this one.Question: Will it tear, rip, or pop easily?This ain't no cheap $2 beach ball. This is a well-made product that has withstood fairly savage beatings in our parking lot. In fact, we've had a full-grown man jump on it several times and he just bounced right off (see video above).That being said, we do urge the following caution: be careful not to overinflate!