Share this on WhatsApp Originally published in August 1856 Credit: Scientific American Advertisement “This contrivance externally resembles a watch in size and shape. Within the case is a bell and spring hammer, the latter connected with a fob chain. The supposition is, that the thief will pull the chain in order to obtain the prize. […]
Share this on WhatsApp Originally published in November 1945 Credit: Scientific American Advertisement “War trends as foreseen by General H. H. Arnold include: One, airplanes traveling at supersonic speeds; at such speeds, aerial combat as it is known today would be impossible. Two, development of guided missiles; refinement of their controls could enable exact hits […]
Share this on WhatsApp The new coronavirus that has infected millions of people around the globe can wreak havoc far beyond the lungs. Some of the symptoms of the disease it causes, COVID-19, are predictable enough: cough, fever, chills, headache. But the pathogen’s effects by no means stop there. The virus can cause problems in […]