Test

A similar Epson HX-20 notebook or laptop computer, said to be "firsts" made by Epson, though with a micro cassette tape drive in the upper right side to store BASIC programs and data, printed out on paper on the left, was used as data recorder for the Lietz Elta 38 (Zeiss?) infrared transit on different archaeology sites, the first one, the winter excavation of the so-called "Augustine Heerman Warehouse" site in lower Manhattan, off of Whitehall St. The infrared transit measures the time a bounced LED emitted infra-red light takes to return into the telescope of the transit from a reflecting prism, which as a single prism will work to 1000 meters (then now 4000 m See Forestry Supplies, Inc.) and in an array, much further. "Corner Cube Prisms are designed to reflect any ray or beam entering the prism face, regardless of the orientation of the prism, back onto itself." - Edmund Optics. A similar setup is used to track the variable Earth to Moon distance, a laser though and astronomical telescope. That prism array was left on the Moon by Apollo astronauts. Another similar set were carried to the top of Mt. McKinley (or Denali) by Senator Kennedy of Massachusetts a number of years ago to determine the mountain's height. A similar science was used to situate a new rail curve from the top of the former World Trade Center a number of years ago, complicated conditions, necessitated it. Another similar system, wearing a gyro stabilized "hat" of reflecting prisms is suggested for rescuing downed flyers in the water, as a plane flying overhead with scanners could pin-point the hat wearer quickly, a plane flying over, would scan a much larger area than other methods currently used. The oldest lens in the world was found in the "Arab" world, which advanced the science of math and optics during the European "dark ages" and why many stars and constellations have "Arab" names. Currently, more sensitive and cheaper models can measure up to 100 meters without a prism, or using a reflective tape marker.