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====Angular velocity==== | ====Angular velocity==== | ||
Instead of measuring an object's speed as m/s or miles/hour, a speed can also be measured as the percieved change in the angle to an object from a certain location. A good example is the suns movement across the sky, where it moves 360° in 24 hours. If the sun is moving away or towards us is irrelevant, that wouldn't change the angle, only sideways movement will. | |||
Just as a circle can be described as an angle of 360°, it can also be described as an angle of 2π radians. Meaning that one radian equals to roughly 57° (360/2π). | Just as a circle can be described as an angle of 360°, it can also be described as an angle of 2π radians. Meaning that one radian equals to roughly 57° (360/2π). | ||