- #1
Masafi
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I have attached the question, and the answer. I don't understand the answer given.
Masafi said:I have attached the question, and the answer. I don't understand the answer given.
berkeman said:I agree that the answer is a bit obtuse, but do you understand how there is a torque on an electric dipole in an E-field? You can draw the F=qE force vectors if that helps...
Masafi said:It is an uniform electric field, but the forces are not collinear... Why is this?
An LCD (liquid crystal display) is a type of flat panel display commonly used in electronic devices such as televisions, computer monitors, and smartphones. It works by using a uniform electric field to control the orientation of liquid crystal molecules, which in turn control the amount of light that passes through the display.
A uniform electric field is created by applying a voltage across two electrodes that are placed on either side of the liquid crystal layer. This voltage creates an electric field that is constant and uniform throughout the display.
Using a uniform electric field allows for precise control over the orientation of liquid crystal molecules, resulting in better image quality and energy efficiency. It also allows for a thinner and lighter display compared to other display technologies.
The strength and direction of the uniform electric field determine the orientation of liquid crystal molecules, which in turn affects the amount of light that passes through the display. By controlling this, the display can produce images with high resolution, contrast, and color accuracy.
There is currently no evidence to suggest that the uniform electric field used in LCDs poses any health risks. LCDs have been extensively tested and approved by regulatory agencies for safe use in electronic devices.