We wanted to know in which camp to place expeller pressed oil. What you need to know: The three most popular methods of oil extraction from vegetables, nuts and seeds are : * Chemical solvents * Centrifuge * Screw press (expeller) Often, more than one method is used, this in order to squeeze the most oil out.
Best Answer: Good question. On average clouds reflect 60% of incoming solar radiation which includes short wave UV. The thicker the cloud the greater the reflection, from 60 - 90%. For thin clouds the albedo, or relection is 30 - 50%, which explains why we can still receive UV on cloudy days. Source(s): I am a retired Air Force meteorlogist with a Ph.D. in atmospheric science and over 50 years of professional experience.
Astronomy is very sensitive to light pollution. The night sky viewed from a city bears no resemblance to what can be seen from dark skies. Skyglow (the scattering of light in the atmosphere) reduces the contrast between stars and galaxies and the sky itself, making it much harder to see fainter objects.