Here is proven here with Osiloscope, radiation meter, and light and light intensity, LED light in the spectrum of blue light spikes short wavelengths around 450 nano meters in the gland suppression in the biological watch and harm the prostate at night so it is harmful and also a yellow spectrum. In the spectrum and the light mostly yellow and much more similar to sunlight because it is also 2700 Calvin. "Smart" for stupid people is himself and the masses of masses toxic and with LED is not economical but the electricity bill is higher. Ultra Sunni weapons can also harm the feed. Melatonin production and secretion can also reach cancer in young people such as lymphoma and leukemia, a lack of melatonin impairs metabolism and immune system, sleep and biological clock. Light at night is a powerful LED pollutant damaging. Looks yellow shows some short wavelengths like blue, measure the spectrum.