Sonic the Hedgehog is the title character of Sega's flagship video game franchise, who first appeared in 1991 in his first game for the Sega Genesis console (also known as the Mega Drive outside of North America).
When this beam is reï¬ected back to the laser unit, the unit provides a speed reading. Because of the narrow beams, laser units are hand-held, and can only be used from a stationary position.Common laser errors Both human error and the nature of laser light contribute to errors. For example, laser can only be used at a distance of a thousand feet. This does not give much time for aiming or vehicle identiï¬cation. Environmental and usage conditions also aï¬ect laser. Rain, fog, and snow can lead to false readings, as can reï¬ections of laser light from highway structures and other vehicles. As with any complex electronic device, there can be technical malfunctions and miscalibrations.
Also referred to as LIDAR (light detection and ranging), laser speed guns use light in extremely fast pulses to detect an object's speed. It has a range of 1,000 feet to 4,000 feet, and it's very accurate. One of the advantages of laser speed guns is that they're nearly impossible to detect beforehand.