SPACE HELMET Meaning and
Definition
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A space helmet refers to a protective headgear specifically designed for astronauts and cosmonauts during extravehicular activities (EVAs) or spacewalks. It is an essential piece of equipment that provides a sealed environment for the wearer, allowing them to breathe comfortably and providing protection against the vacuum of space.
Typically, a space helmet consists of a sturdy, shatterproof visor made of polycarbonate material that shields the wearer's face from micrometeoroids, harmful ultraviolet radiation, and extreme temperature variations. The visor is usually equipped with a gold or mirrored coating to reflect intense sunlight and thermal radiation. Additionally, it may incorporate a sun visor to shield the astronaut's eyes from direct sunlight.
The helmet is connected to the rest of the spacesuit, forming an airtight seal, and is equipped with a ventilation system that circulates the necessary amount of oxygen to sustain breathing. There are also communication devices installed to enable voice communication with the mission control center and other astronauts.
The design and construction of a space helmet prioritize safety, functionality, and comfort. It is essential to maintain the pressure differential between the wearer's body and the vacuum of space, preventing injuries like decompression sickness. The helmet may additionally feature padding and adjustable straps to provide a snug fit and prevent excessive movement during EVAs.
Overall, a space helmet serves as a critical component of a spacesuit, ensuring the safety and survival of astronauts as they venture outside the confines of a spacecraft into the hostile environment of outer space.
Common Misspellings for SPACE HELMET
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Etymology of SPACE HELMET
The term "space helmet" is a compound word that combines "space" and "helmet" to describe the protective headgear worn by astronauts or cosmonauts during space missions.
The word "space" originated from the Latin word "spatium", which referred to an area, extent, or distance. It later evolved in the English language to denote the limitless expanse that exists beyond Earth's atmosphere.
The word "helmet" has its roots in the Old English word "helm" meaning "protective covering". It is related to the Old High German word "helm" and the Old Norse word "hjalmr", both of which also refer to protective headgear.
The term "space helmet" comes from the combination of these two words, representing the specialized protective headgear designed for astronauts or cosmonauts to wear in the space environment.
Similar spelling words for SPACE HELMET
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