مؤلف: Deric Fiedler

Noise-induced hearing loss is one of the most common occupational diseases. Approximately 30 million workers in the USA alone are exposed to hazardous noise at work. There is no effective treatment f …

In physical cosmology, astronomy and celestial mechanics, dark energy is a hypothetical form of energy that permeates all of space and tends to increase the rate of expansion of the universe. Dark en …