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A geostationary orbit, geostationary Earth orbit or geosynchronous equatorial orbit (GEO), is an orbit whose position in the sky ... more

Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or ... more

The Brinell scale characterizes the indentation hardness of materials through the scale of penetration of an indenter, loaded on a material test-piece. It ... more

Convert temperature between Fahrenheit and Celsius scales.

Convert temperature between Rankine and Celsius scales.

Convert temperature between Delisle and Celsius scales.

Convert temperature between Kelvin and Celsius scales.

Convert temperature between Fahrenheit and Celsius scales.

Convert temperature between Réaumur and Celsius scales.

Convert temperature between Rømer and Celsius scales.