Luigi Galvani – 12.04.1798 died L. Galvani, Italian physicist, physician and physiologist.
While anatomical studies discovered the phenomenon of electrical stimulation organs.
Flying police – Projects police cars entered the competition, which was held at the Motor Show in LA, consist of:
– thin organic foam-filled tires instead of air
– the suspension is, however, electro-mechanical, with a special material IPMC (Ionic Polymer Metal Composite) enabling, depending on the applied voltage embracing different shapes
– with electrical energy wheels can also be deflected vertically.
Energy from sugar – A team of researchers from the Technical University of Virginia (the so-called. Virginia Tech) was inspired by nature and last year presented a draft of a battery that uses sugar to produce electricity.
The energy density of sugar is much higher than conventional lithium-ion batteries,
– He pointed out one of the advantages of the invention, research manager Y.H. Percival Zhang, an engineer biological systems at Virginia Tech. Bio battery offers an energy density of about 596 Ah / kg (ampere-hours per kilogram), while the typical lithium-ion battery has a density of only 42 Ah / kg.
Church tower protruding from water – The Lake Reschensee in South Tyrol (Italy) waiting an unusual sight: a protruding from the water Church tower. Only that was from the village of Alt-Graun. In the 50’s of the last century energy company decided to create there a reservoir for electricity and water. Alt–Graun residents were displaced, and the valley around the village – was poured. Today, almost nothing after it has been – apart from protruding from the water tower of the ancient parish church of St. Catherine.
Conductive metals – Standard on properties of silver – Conductor causes little resistance to the flow of electric current or heat, which means that the load can move freely. Electrically conductive metals, usually also conduct heat. In selecting the most-conductor metal is silver, copper and gold. Standard conductivity of metals is based on the properties of silver, which is the best conductor of all pure metals. On a scale from 0 to 100, where 100 is the best conductivity, silver received 100. On the other hand, gold considered to be an excellent conductor, received only 76 points.