Ferrofluid is a liquid that reacts to magnets in such an amazing way producing individual spikes. Theses spikes are caused by the balance of the gravitational pull keeping the liquid flat; the surface tension which wants to minimize the surface area and f
With halloween just around the corner, we are at that time of the year where many of us get a thrill of being scared senseless. Some may love the boost of adrenaline that comes from watching a horror film or being spooked just before they go to sleep.
Right now, detecting contaminated water can take days, and that puts humans and animals at serious risk. But a new biosensor developed by grad students in Denmark promises to spot unclean water in an instant, and whether it's used in a village well.