Raisins are a great food that boost testosterone levels for multiple reasons. Firstly, theyâre anti-inflammatory and chock-full of antioxidants, such as resveratrol, which has been linked to increased testosterone and lowered estrogen levels in few studies (study, study).
In 1839, John Herschel made the first glass negative, but his process was difficult to reproduce. Slovene Janez Puhar invented a process for making photographs on glass in 1841; it was recognized on June 17, 1852 in Paris by the AcadÃ©mie Nationale Agricole, ManufacturiÃ¨re et Commerciale.
In the 1800s scientists were experimenting with electricity in glass tubes that contained a near vacuum. With a near vacuum there should have been almost no matter left in the tube, but it was found that hooking this tube to a battery caused a ray to travel from the cathode (negative) end of the tube to the other side.