UsesHelium is used as a cooling med

Uses
Helium is used as a cooling medium for the Large Hadron Collider (LHC), and the superconducting magnets in MRI scanners and NMR spectrometers. It is also used to keep satellite instruments cool and was used to cool the liquid oxygen and hydrogen that powered the Apollo space vehicles.

Because of its low density helium is often used to fill decorative balloons, weather balloons and airships. Hydrogen was once used to fill balloons but it is dangerously reactive.

Because it is very unreactive, helium is used to provide an inert protective atmosphere for making fibre optics and semiconductors, and for arc welding. Helium is also used to detect leaks, such as in car air-conditioning systems, and because it diffuses quickly it is used to inflate car airbags after impact.

A mixture of 80% helium and 20% oxygen is used as an artificial atmosphere for deep-sea divers and others working under pressurised conditions.

Helium-neon gas lasers are used to scan barcodes in supermarket checkouts. A new use for helium is a helium-ion microscope that gives better image resolution than a scanning electron microscope.
Biological role
Helium has no known biological role. It is non-toxic.
Natural abundance
After hydrogen, helium is the second most abundant element in the universe. It is present in all stars. It was, and is still being, formed from alpha-particle decay of radioactive elements in the Earth. Some of the helium formed escapes into the atmosphere, which contains about 5 parts per million by volume. This is a dynamic balance, with the low-density helium continually escaping to outer space.

It is uneconomical to extract helium from the air. The major source is natural gas, which can contain up to 7% helium.

ผลลัพธ์ (อังกฤษ) 2:

Uses
Helium is used as a cooling Large Hadron Collider Medium for the (LHC), the superconducting magnets in MRI scanners and spectrometers and NMR. It is also used to cool and was Instruments Satellite Keep used to cool the Liquid Oxygen and hydrogen that the Apollo Space Powered vehicles. Because of its low density helium is often used to fill decorative Balloons, Balloons and airships Weather. Hydrogen was once used to fill Balloons but it is dangerously reactive. Because it is very unreactive, helium is used to provide an inert atmosphere for Making Protective Fibre Optics and Semiconductors, and for Arc WELDING. Helium is also used to detect leaks, such as in Car Air-conditioning Systems, and because it diffuses Quickly it is used to inflate Car airbags after Impact. A mixture of 80% helium and 20% Oxygen is used as an artificial atmosphere for Deep. Sea Divers and others working under pressurized conditions. Helium-Neon gas lasers are used to Scan barcodes in Supermarket checkouts. A New use for helium is a helium-ion Microscope that gives better resolution than a Scanning Electron Microscope Image. Biological role Helium has no Known Biological role. It is non-Toxic. Natural Abundance After hydrogen, helium is the Second Most Abundant element in the Universe. It is present in all stars. It was, and is still being, formed from alpha-particle decay of radioactive elements in the Earth. Some of the helium formed escapes into the atmosphere, which contains about 5 parts per million by volume. This balance is a Dynamic, with the low-density helium continually escaping to Outer Space. It is Uneconomical to Extract helium from the Air. The major source is natural gas, which can contain up to 7% helium.

ผลลัพธ์ (อังกฤษ) 3:

Uses
Helium is used as a cooling medium for the Large Hadron Collider (LHC), and the superconducting magnets in MRI scanners. And NMR spectrometers. It is also used to keep satellite instruments cool and was used to cool the liquid oxygen and hydrogen. That powered the Apollo space vehicles.

Because of its low density helium is often used to fill, decorative balloons weather. Balloons and airships.Hydrogen was once used to fill balloons but it is dangerously reactive.

Because it is, very unreactive helium is used. To provide an inert protective atmosphere for making fibre optics and semiconductors and for, arc welding. Helium is also. Used to detect leaks such as, in car air-conditioning systems and because, it diffuses quickly it is used to inflate car. Airbags after impact.

.A mixture of 80% helium and 20% oxygen is used as an artificial atmosphere for deep-sea divers and others working under. Pressurised conditions.

Helium-neon gas lasers are used to scan barcodes in supermarket checkouts. A new use for helium. Is a Helium-Ion microscope that gives better image resolution than a scanning electron microscope.

Biological role Helium. Has no known biological role.It is non-toxic.

After, Natural abundance hydrogen helium is the second most abundant element in the universe. It is present. In all stars. It was and is, still being formed from, alpha - particle decay of radioactive elements in the Earth. Some of. The helium formed escapes into the atmosphere which contains, about 5 parts per million by volume. This is a, dynamic balanceWith the low-density helium continually escaping to outer space.

It is uneconomical to extract helium from the air. The. Major source is natural gas which can, contain up to 7% helium.