Tire placard pressure is often much lower than listed on the tire sidewall. Air pressure given by the vehicle maker was based on the tires supplied with the vehicle. They design many newer replacement tires to give a good ride, with much more pressure.
Fresnel lens. A Fresnel lens is a type of lens invented by Augustin-Jean Fresnel. Originally developed for lighthouses, the design enables the construction of lenses of large size and short focal length without the weight and volume of material which would be required in a lens of conventional design. Detailed information.
A: The Frisbee was invented in 1957 by a Californian UFO enthusiast named Walter Frederick. But he didnât call it a Frisbee. The Wham-O company bought his idea for a toy saucer, and later named it after a popular pie restaurant in Bridgeport, Connecticut. William Frisbieâs pies were very popular with kids who liked to throw the tins around after they ate the pie! Hence, the Frisbee!