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  2. Radian - Wikipedia

    en.wikipedia.org/wiki/Radian

    One radian is defined as the angle at the center of a circle in a plane that subtends an arc whose length equals the radius of the circle. [6] More generally, the magnitude in radians of a subtended angle is equal to the ratio of the arc length to the radius of the circle; that is, =, where θ is the magnitude in radians of the subtended angle, s is arc length, and r is radius.

  3. Tesla Model 3 - Wikipedia

    en.wikipedia.org/wiki/Tesla_Model_3

    For the Model 3, Tesla initially decided to use 2170-type (21 mm diameter, 70 mm height) cylindrical cells. Compared with the 18650-type batteries that the company had been using since its first generation Roadster, the 2170 batteries were optimized for electric cars, allowing for a higher capacity per cell and a lower number of cells per ...

  4. Indicator (distance amplifying instrument) - Wikipedia

    en.wikipedia.org/wiki/Indicator_(distance...

    A precision dial indicator, with a sensitivity of 0.01 mm and range of 10 mm. In various contexts of science, technology, and manufacturing (such as machining, fabricating, and additive manufacturing), an indicator is any of various instruments used to accurately measure small distances and angles, and amplify them to make them more obvious.