(The early experiments were quite crude, and part of Einsteins genius was his ability to intuit the real significance of imperfect and apparently conflicting experimental results.) He was speaking of what is known as the photoelectric effectthe shining of light, or X-rays, an energetic form of light (that is, electromagnetic radiation), on a metal plate, which results in the emission of a stream of electrons from the plate
(1850), Annals of Philadelphia and Pennsylvania , King and Baird Wescott, Thompson (1857), The life of John Fitch, the inventor of the steamboat , Philadelphia: J
Discarded cigarettes can contain chemicals and carcinogens that are harmful to animals and the environment
The nicotine and other chemicals in cigarettes can constrict blood vessels, reducing blood flow to the gums and the extraction site
This is because hash contains very high levels of THC, usually much higher than marijuana, although THC levels have been climbing in marijuana in recent years