It is useful. but areas with maximum radiation of computers is at back of monitors, so if you want to prevent radiation, you'd better put some plants besides the computer, which can absorb much radiation than that of radiation-proof membranes.
Computer monitor radiation-proof stick membranes are very good. Compound media are added in PET raw materials during production, membrane surfaces are plated with radiation-proof coatings (nano metal elements are contained which perform as conductors). It play a certain role in filtering and reflecting wave. Since the radiation of computers and televisions is mostly from electromagnetic waves of LCD screens. These waves have a certain wavelengths and amplitudes. The radiation layer is based on wave property and interference, electromagnetic waves with different wavelength caused by stick membranes interfere with each other which can offset part of radiation, thus stick membranes are radiation-proof and can reduce radiation. .
