What is the css speed unit?

css rotation speed unit refers to the unit used in CSS to express the rotation speed in animation or transition. Usually used to specify the speed of an object's rotation around its own axis or other axes. There are two common ways of expressing speed units: deg and rad. deg is the most common rotational speed unit and is used to specify the speed at which an object rotates in degrees. Positive or negative numbers can be used to represent clockwise or counterclockwise rotation. Rad is another unit used to express rotational speed. It can more accurately describe the angle of rotation. Positive or negative numbers can be used to represent clockwise or counterclockwise rotation.

# Operating system for this tutorial: Windows 10 system, Dell G3 computer.

CSS speed unit refers to the unit used in CSS to express the rotation speed in animation or transition. RPM units are often used to specify how fast an object rotates about its own axis or another axis.

In CSS, there are two common representations of speed units: deg and rad.

deg (degree): Degree is the most common unit of rotational speed and is used to specify how fast an object rotates in degrees. A complete circle is 360 degrees, so when the rotational speed unit is degrees, you can use positive or negative numbers to represent clockwise or counterclockwise rotation. For example, an object rotating clockwise at 30 degrees per second can be represented using the following CSS code:

animation: rotate 1s infinite linear;
@keyframes rotate {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(30deg);
  }
}

rad (radians): Radians are another unit used to express rotational speed, which can be more precise Describe the angle of rotation. The corresponding radian of a complete circle is 2π, so when the rotation speed unit is radian, you can use positive or negative numbers to represent clockwise or counterclockwise rotation. The formula to convert degrees to radians is: radians = degrees × (π / 180). For example, an object rotating counterclockwise at a speed of π/6 radians per second can be represented using the following CSS code:

animation: rotate 1s infinite linear;
@keyframes rotate {
  0% {
    transform: rotate(0rad);
  }
  100% {
    transform: rotate(-0.5236rad);
  }
}

It should be noted that although radians can provide a more accurate measurement of rotation, in actual development Medium, degrees are more common and easy to understand.

At the same time, other speed units can also be used, such as turn (one circle) and grad (gradient). Turn represents the speed of an object rotating in a complete circle, and grad is an angle unit based on a right angle. However, these two units are less commonly used in practical applications.

To sum up, the CSS speed unit is a unit used to express the rotation speed of objects during animation or transition. Common speed units are deg (degrees) and rad (radians), and degrees are more common.

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