SEM meaning in Space Science ?

Answer:

What is Scanning Electron Microscope mean?

A scanning electron microscope (SEM) is a type of electron microscope that produces images of a sample by scanning the surface with a focused beam of electrons. The electrons interact with atoms in the sample, producing various signals that contain information about the surface topography and composition of the sample. The electron beam is scanned in a raster scan pattern, and the position of the beam is combined with the intensity of the detected signal to produce an image. In the most common SEM mode, secondary electrons emitted by atoms excited by the electron beam are detected using a secondary electron detector (Everhart-Thornley detector). The number of secondary electrons that can be detected, and thus the signal intensity, depends, among other things, on specimen topography. Some SEMs can achieve resolutions better than 1 nanometer.

Specimens are observed in high vacuum in a conventional SEM, or in low vacuum or wet conditions in a variable pressure or environmental SEM, and at a wide range of cryogenic or elevated temperatures with specialized instruments.

reference

Full Form	Category
SEMester	Academic & Science
Space Environment Monitor	Academic & Science
Society for Ethnomusicology	Academic & Science
Sun, Earth, Moon	Academic & Science
Software Engineering Manager	Academic & Science
Science, Engineering, and Mathematics	Academic & Science
Single European Market	Business
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Spec Epics Motors	Business
Sound and Efficient Management	Business
Strategic Enterprise Management	Business
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Search Engine Marketing	Business
Strategic Enrollment Management	Business Management
Solvent Extractable Material	Chemistry
Society for Experimental Mechanics	Community
Schoolwide Enrichment Model	Community
Systematic Evaluation of Members	Community
Special Education and Middle school	Community
Sexually Explicit Material	Community
Smartstream Encryption Modulator	Computer Hardware
Simply Expensive Machine	Computing
State Event Machines	Computing
Scripture Encoding Model	Computing
System Error Message	Computing
Server Enterprise Manager	Computing
Symantec Event Manager	Computing
Scalar Equation Method	Computing
Station Emulation Mode	Computing
Sql Enterprise Manager	Computing
Security Event Management	Computing
Semux	Cryptocurrency
Synthesizer Expander Module	Electronics
Session Experience Manager	General
Scanning Electron Microscopy	General
Structural Equation Modelling	General
Set of Eye Movement	General
Sonido En Movimiento	General
South East Motor	General
Shift Energy Management	General
Shell Eco Marathon	General
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Steptoe Edwards Motors	General
Square Enix Mobile	General
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Search Engine Marketer	Jobs
Standard Error of Mean	Maths
Structural Equation Modeling	Maths
Systolic Ejection Murmur	Medical
Semen	Medical
Smooth Eye Movements	Medical
Scanning Emectron Microscopy	Physics Related
Secondary Electron Multiplier	Physics Related
Structural Equation Models	Physics Related
Standard Error of Measurement	Physics Related
Semitic - Other	Regional
Southern Europe and Mediterranean	Regional
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Sample Exchange Mechanism	Space Science
Scanning Electron Microscope	Space Science
Space Environment Monitoring	Space Science
Spacecraft Equipment Module	Space Science
System Engineering Management	Space Science
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