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.
James Ayscough began experimenting with tinted lenses in spectacles in the mid-18th century, around 1752. These were not sunglasses as that term is now used; Ayscough believed that blue- or green-tinted glass could correct for specific vision impairments. Protection from the Sun's rays was not a concern for him.