Quantum mechanics/Casimir effect in one dimension. Abstract The Casimir effect is interesting because it introduces the concept of Ramanujan summation of the divergent series, 1+2+3+4+..., and because it offers experimental evidence that empty space is not truly empty. Every step in this derivation of the Casimir effect uses straight-forward and familiar mathematics.
Man's Kidney Failure Linked To Massive Tea Consumption. The puzzling case of a 56-year-old U.S. man who suddenly developed weakness, fatigue and body aches is leading doctors to warn that massive consumption of tea may be responsible.
Using cannabis as a tea. Cannabis administration in the form of a tea is easy and reliable. The effects of cannabis tea are generally mild, because the concentration of active compounds in tea is relatively low. Although it takes up to a few hours before the first effects become apparent, the duration of action is longer than after inhalation.