Tuesday, 20 December 2016


10 Ways the World Would Change if We Ran Out of Helium
By Robert Grimminck,
Toptenz, 20 December 2016.

Helium was first discovered in 1895. It is the second most abundant element in the universe and it makes up 0.0005 percent of the Earth’s atmosphere. It is a colorless, odorless gas that is lighter than air and it is the coldest liquid on Earth.

While it’s abundant in the universe, on Earth, we might be running out of it. You may not know it, but helium is an important part of modern life and possible shortages have been such a big worry that the United States government has been stockpiling helium since the 1960s.

The problem is that once helium hits the atmosphere, it is pretty much useless, so it needs to be mined or pull from natural gas. This makes helium a finite element on Earth.

So what would a post-helium world look like?

10. No More Party and Parade Balloons


When the American government first announced a possible shortage of helium in April 2012, one of the first things suggested to conserve helium is to stop using it to fill up party balloons and balloons used in parades. This is pretty hard to argue against because it’s a completely frivolous use of the a finite element, even if you can get a good laugh out of listening to people’s voices change after inhaling the gas and parades won’t be as exciting. However, as you’ll see, helium has a lot more important uses.

Unfortunately, eliminating helium filled balloons isn’t going to solve the problem of helium running out, because only a minuscule amount of helium is used to fill up balloons. It would be like a pack a day smoker trying to avoid cancer by taking one last puff every year.

9. Airships


One reason that helium is so useful in many different fields is that it is safe to use because it isn’t flammable or combustible. This makes it great for flying machines like blimps. When blimps are filled with a different lighter-than-air gas, such as hydrogen, which is both combustible and flammable, things can go horribly wrong. A notable example is the Hindenburg disaster in 1937, when the German blimp LZ 129 Hindenburg burst into flames while trying to dock at the Naval Air Station Lakehurst in New Jersey. In total, 36 people were killed. While the cause is debated, the fact that the airship was full of flammable and combustible gas wouldn’t have exactly slowed down the fire.

Granted, blimps aren’t common and most people have probably only seen one at an air show or a football game, but amazingly they are still used by different segments of the United States government. One example is the Tethered Aerostat Radar System (TARS). They are unmanned blimps that are used to detect low and slow flying aircraft and marine craft. It’s currently being used along the American-Mexican border and in a portion of the Caribbean.

Another blimp used by the United States is the Joint Land Attack Cruise Missile Defense Elevated Netted Sensor System, which is used to track things like cruise missiles or even trucks full of explosives. The project has been in development for over two decades and the Pentagon has spent at least US$2.7 billion on the project.

A whole other field of flight that wouldn’t work without helium is balloon space tourism. Currently, there are two companies that plan on sending people into space using helium filled balloons. For US$75,000 to US$125,000, travelers can get into pressurized pods and the balloons will lift them out of the atmosphere. This is similar to the way Felix Baumgartner got to space to do his famous jump.

However, without helium, attempting to reach space in a balloon would be much more dangerous.

8. A Leak Checking Tool


When the Manhattan Project started in 1942, it was important that when they enriched the uranium needed for a nuclear bomb, there couldn’t be any leaks in the pipes or tanks during the process. Even a tiny leak could have been disastrous.

To ensure everything was sealed, the scientists sprayed the welding seams with helium. If there was a leak, the helium would get into it, because out of all the elements, helium has the second smallest atom (hydrogen is smaller, but it is inert, which means it doesn’t move). So helium can find really small leaks, which helps ensure that the tanks and pipes are sealed.

Besides just having a small atom, helium is also non-toxic, inert, non-condensable, and non-flammable, so spraying it won’t leave a trace behind.

Since the Manhattan Project, helium has gone on to be a common way to detect leaks in more than just tanks and pipes. It is used in such industries as food canning, refrigeration, air conditioning, furnace repair, fire extinguishers, aerosol cans, and car parts, just to name a few. Essentially, any industry that relies on sealed cans use helium to look for leaks. That means without helium, we may have products that be will more dangerous because they are leaking, and/or products will be more expensive because some other method will need to be implemented to detect leaks in all those different fields.

7. Some Welding Will be Impossible


One of the most common applications for helium is welding; about 23 percent of the world’s helium supply is used for welding purposes.

Certain arc welding jobs, which is the process of joining two metals using electricity, depends on helium because it is used to keep the molten metal from oxidizing. One type of metal that couldn’t be welded without helium is aluminum. That means things like shipbuilding and building space shuttles will be much more difficult to do.

However, arc welding isn’t the only type of welding that utilizes helium. CO2 laser welding, which is used in car manufacturing, uses helium as a shielding gas. Shielding gas is used to keep the molten metal away from other elements in the air, like oxygen, water, and nitrogen. Without helium, this could cause an increase in vehicle prices while alternative methods are implemented.

6. Barcodes


One of the most common ways that we interact with helium is at the supermarket. Barcodes scanners use helium-neon lasers, also known as HeNe lasers and they use a gas ratio of 10:1 helium to neon. HeNe lasers are used because they are inexpensive, have a low energy consumption, and they are efficient. Besides just barcode scanning, HeNe lasers are also used in other fields, like microscopy, spectroscopy, optical disc reading, biomedical engineering, metrology, and holography.

Of course, the good news in this example is that, as many of you with smart phones already know, there are other ways to scan codes. It will just be a matter of changing over to the new forms of scanning.

5. Space Travel Would Become More Dangerous


A field that would be incredibly hard hit by a lack of helium is the aerospace industry. NASA reportedly uses about 90 to 100 million cubic feet of helium a year in a whole variety of ways.

One way is that when a rocket burns fuel, the fuel that was in the tank is replaced with helium. This ensures that the tank doesn’t collapse under structural pressure. This also reduces the risk of fire or an explosion in the fuel tank. Helium is also useful during space travel because it keeps hot gases away from ultra-cold liquids.

A third way that NASA uses helium is to clean liquid oxygen out of tanks. Finally, there are other minor uses, like it’s needed for pneumatic control systems and it cools fueling handling systems.

Without helium, space travel will still be possible, but it will be a lot more dangerous than it already is.

4. The Large Hadron Collider will be Useless


It’s believed the Large Hadron Collider at CERN can help unlock many of the universe’s mysteries. It’s the biggest, most powerful machine on earth, and it smashes subatomic particles together almost as fast as the speed of light. And in order for the whole thing to work, liquid helium is needed.

Shooting those particles around the 16.7 mile loop are magnets that steer the particle beams. However, they can quickly overheat and they need to be cooled with liquid helium to -452.47 degrees. Also, the niobium-titanium wires that make up the magnets that shoot the particle beams around the loop are housed in a closed liquid-helium circuit that is -456.25 degrees. Liquid helium also cools the entire system down to -456.34 degrees.

Without liquid helium, the Large Hadron Collider would literally become, and we’re gonna use a technical term here, a hot mess.

3. MRI Scans Will Be Less Common


Magnetic resonance imaging (MRI) is a common tool in the medical field and it is used to non-invasively look inside the human body at things like ligaments, spinal cords, and organs, including the brain. A lot of times, ailments like torn ligaments and tumors are diagnosed using MRI machines. However, without helium it will be impossible to run these machines.

How an MRI works is that a magnet is powered and it creates a magnetic field. This field causes the protons of hydrogen atoms in your body to align and then they are exposed to a beam of radio waves. This creates a signal that is picked up by a receiver, which converts the information to a detailed image. However, maintaining that large magnetic field requires a lot of energy. To get that much power and sustain it without overheating, helium is used and that is done by reducing the resistance in the wires to almost zero. This is accomplished by constantly bathing the wires in liquid helium that is -452.38 degrees. On average, one machine uses 1,700 liters of liquid helium.

While there are MRI magnet cooling systems that do not use helium, the problem is that they are not designed for full body MRI machines, like the ones that are in hospitals.

2. Computer Chips and Fiber Optics


As we’ve mentioned a few times, helium is commonly used for cooling. In fact, nearly a third of it is used for cryogenics. One notable feat is that it can be cooled to temperatures near absolute zero, which is -459.67 degrees. This makes it the coldest liquid on Earth.

Another field where cold helium is vital in computers and telecommunications. One of the main uses is with fiber optics, which are cables that are used to connect the internet and telecommunications. Fiber optics can transfer more data over longer distances than wire cables. However, they are much more fragile than wire cables and they need to be housed an in all-helium environment or it can cause air bubbles, which would make them useless.

Another way helium is used when it comes to computers is that computer chips are made using superconductors. Superconductors are basically magnets that are supercharged and don’t overheat thanks to liquid helium.

Without helium, computer chips will be incredibly hard to make. This is going to have big ripple effects on everything that uses computer chips, this includes cars, smart phones, appliances, and of course computers.

1. Scientific Progress Will Be Slowed


The Large Hadron Collider is the biggest experiment that uses helium, but it is also necessary for use in all different types of experiments and machines that are used in universities and laboratories around the world. The reason it’s used is because it’s safe because it isn’t flammable or combustible, which is great for researchers, especially students who are still learning.

So other elements, much more dangerous ones, will have to be used to cool the machines. This will clearly slow down progress and make experiments and machines more dangerous. Even if there was a way to run the machines, that means they will have to be retrofitted or purchased new, which isn’t cheap. For example, Western Michigan University’s chemistry department has a US$250,000 machine that needs helium and they have a tank of helium delivered monthly. That is just one department at one university.

Without helium, all fields of scientific study that rely on machines that use helium will be slowed down this includes physics, medical science, chemistry, and computer science, just to name a few. In turn, scientific study will be severely handicapped.

Top image: Vial of glowing ultrapure helium. Credit: Hi-Res Images of Chemical Elements/Wikimedia Commons.

[Source: Toptenz. Edited. Top image added.]

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