what is helium used for

What Is Helium Used For? Unveiling 15 Uses in Modern Technology

Helium, often associated with floating balloons and funny voices, has a much broader role in modern society. This article dives into the intriguing question: “What is helium used for?” Discover seven distinct and surprising uses of this noble gas, extending far beyond its typical party use.

Scientific and Industrial Uses

1. Cooling in MRI Machines


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In the realm of medical imaging, helium’s role is indispensable. MRI machines utilize superconducting magnets, which must be maintained at extremely low temperatures to function properly. Helium, with its exceptionally low boiling point, serves as an ideal coolant, keeping these magnets at the necessary cryogenic temperatures. This application is not just about efficiency; it’s about patient safety and the reliability of diagnostic procedures.

2. Helium-Neon Lasers in Medicine

Helium-Neon Lasers

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Helium-neon lasers are a cornerstone in various medical fields. These lasers provide a stable, coherent light source, ideal for precise medical applications. In dermatology, they are used for skin treatments, while in ophthalmology, they assist in procedures like retinal photocoagulation. The precision these lasers offer minimizes tissue damage and improves patient outcomes.

3. Coolant in Aerospace Technologies

Coolant in Aerospace

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The aerospace sector heavily relies on helium for cooling sensitive equipment in space missions. Its low boiling point and non-reactive nature make helium an excellent coolant for space telescopes and other spacecraft components. This cooling capability is vital for maintaining the functionality of instruments in the harsh environment of space.

4. Pressurizing Fuel Tanks in Rockets

Fuel Tanks

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Helium is also critical in space exploration as a pressurizing agent in fuel tanks of rockets. It ensures the smooth flow of fuel to the engines, a crucial factor for the success of space missions. Helium’s inertness guarantees that it doesn’t react with rocket fuel, providing a safe and effective way to manage fuel delivery in these extreme conditions.

5. Particle Accelerators in Scientific Research

Particle Accelerators

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In the field of particle physics, helium’s role cannot be overstated. Major particle accelerators like the Large Hadron Collider use liquid helium to keep their superconducting magnets at cryogenic temperatures. This is essential for achieving the high-energy particle collisions necessary for groundbreaking physics research, probing the fundamental nature of the universe.

6. High-Altitude Scientific Balloons

Scientific Balloons

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Helium-filled scientific balloons are crucial for atmospheric and climate research. They ascend to high altitudes, carrying instruments that collect data on atmospheric composition, weather patterns, and climate change. These balloons can reach altitudes that are inaccessible to regular aircraft, providing unique and valuable data for meteorologists and climate scientists.

7. Coolant in Nuclear Reactors

Nuclear Reactors

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In the nuclear energy sector, helium is used as a coolant in certain types of nuclear reactors, like gas-cooled reactors. Its stability at high temperatures and inertness make it a safe choice for controlling reactor temperatures, thereby ensuring the efficient and safe production of nuclear power.

8. Manufacturing of Fiber Optics and Semiconductors

Fiber Optics

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The electronics industry benefits greatly from helium’s inert nature. In the manufacturing of fiber optics and semiconductors, helium provides a protective atmosphere. This is crucial for maintaining the purity of the materials used, like silicon and germanium, and ensures the high quality of these critical components in modern electronics.

9. Leak Detection in High-Vacuum Systems

Helium is extensively used in leak detection for high-vacuum systems and containers that hold hazardous or nuclear materials. Its small atomic size allows helium to penetrate tiny leaks, making it easier to identify and repair them. This application is vital for ensuring the safety and integrity of systems in industries where even the smallest leak can have significant consequences.

Commercial and Recreational Uses

10. Decorative Balloons

Decorative Balloons

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Helium is most famously known for its use in the balloon industry. Its lightness allows balloons to float, a property that has made helium-filled balloons a staple at parties, celebrations, and promotional events. Beyond just lifting, helium is preferred over hydrogen for safety reasons, as it is non-flammable. The joy and visual appeal of helium balloons make them a popular choice, but this usage also raises concerns about helium conservation, given its finite supply.

11. Scuba Diving Gas Mixtures

Gas Mixtures

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In the realm of deep-sea diving, helium is a critical component of the breathing gas mixtures used. These mixtures, often combining helium with oxygen and sometimes nitrogen, are known as trimix or heliox. Helium is used to reduce the effects of nitrogen narcosis and oxygen toxicity, which can be life-threatening at great depths. This application allows divers to explore deeper underwater environments more safely and for longer periods.

12. Airships and Blimps


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Helium plays a unique role in advertising, particularly through inflatable helium balloons and blimps. These floating advertisements catch the eye due to their movement and elevation, making them effective for attracting attention at events, launches, and in high-traffic areas. Their customizable nature allows for branding and messaging, providing a dynamic medium for promotional activities.

Helium in Electronics and Welding

13. Semiconductor Manufacturing


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Helium’s role in the manufacturing of electronic components, particularly semiconductors and fiber optics, is crucial. It provides a protective atmosphere during the production process, preventing chemical reactions that could damage the delicate components.

Helium’s inert nature ensures that no unwanted chemical reactions occur, which is essential for maintaining the integrity and quality of the semiconductors and fiber optics. This application is critical in the production of high-quality, reliable electronic devices, ranging from smartphones to advanced computing systems.

14. Shielding Gas in Welding Processes

Shielding Gas

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In welding, helium is highly valued for its properties as a shielding gas. It is used to create an inert atmosphere around the welding area, protecting it from the harmful effects of oxygen and nitrogen in the air. This protection is essential for preventing oxidation and other atmospheric contamination during the welding process.

Helium’s use in welding is particularly important for working with non-ferrous metals like aluminum and stainless steel, where it helps to produce cleaner, stronger welds. Its high thermal conductivity also allows for faster and more efficient welding, making it a preferred choice in high-quality welding applications.

15. Gas Chromatography in Chemical Analysis

Gas Chromatography

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In the field of chemical analysis, helium is used as a carrier gas in gas chromatography. Its inertness and consistent behavior under varying conditions make it ideal for this purpose. Helium enables the precise separation and analysis of complex chemical mixtures, an essential process in various scientific and industrial applications, including pharmaceuticals, environmental monitoring, and quality control in manufacturing.


Helium’s diverse applications demonstrate its versatility and importance in both everyday life and specialized industries. From medical imaging to deep-sea exploration, this noble gas plays a crucial role. Understanding what helium is used for highlights its significance and the need to appreciate and conserve this valuable resource.

AboutCorinne Switzer

Corinne is an avid reader and takes a keen interest in conspiracy theories. When not busy with her day job, she likes to indulge the writer in her and pens columns on a wide range of topics that cover everything from entertainment, healthy living to healthcare and more.