1. First, we find sports health on the mobile phone, and click enter.
2. In the main interface of sports health, we can see the amount of exercise, heart rate and so on. Click to view.
3. Find the device options below, and then click View Connected Devices.
The basic principle of dynamic dial is to make the light pass through the slit and the focusing lens to form a beam of parallel light, which is reflected or refracted by the optical elements and then enters the objective lens of the telescope to be imaged on the focal plane of the telescope. By observing and measuring the deflection angle of various rays through eyepiece, optical parameters such as refractive index, wavelength, dispersion rate and diffraction angle can be obtained.