A double convex lens, or converging lens, focuses the diverging, or blurred, light rays from a distant object by refracting (bending) the rays twice. At the front side of the lens, the rays are bent toward the normal (the perpendicular to the surface) because the glass is a denser medium than the air, and, at the back side of the lens, the rays are bent away from the normal as the rays pass into the less-dense medium of the air. This double bending causes the rays to converge at a focal point behind the lens so that a sharper image can be seen or photographed.

The ray nature of light is used to explain how light refracts at planar and curved surfaces; Snell's law and refraction principles are used to explain a variety of real-world phenomena; refraction principles are combined with ray diagrams to explain why lenses produce images of objects.

Thin lenses Light refracts through the surface of a lens The curvature of the lens causes light rays

As every child is sure to find out at some point in their life, lenses can be an endless source of f

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The number of drones for civilian use will be greater than that used for defense, and in 2035, the number of commercial drones populating the US sky will be 175,000, i.e., ten times the actual number of defense-related (public) drones. As forecasted by the United States Air Force Aerospace Management Systems Division, it is expected that in 2028, the number of drones for civilian use will be greater than that used for defense [1], and in 2035, the number of commercial drones populating the US sky will be 175,000, i.e., ten times the actual number of defense-related (public) drones (Fig. 1).

Written by Rich Martin With over 20 years of combined experience as sUAS operators, the flight testers at ModalAI sure know their way around a drone. In their new series, learn about five essential components of high flying drones you should be familiar with in order to have a successful flight every time. GPS Radios a

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Powering your flight controller is an important aspect when it comes to building your own drone, if you get this wrong you might experience some release sparky the blue smoke monster.. Or worse you could end up having a power failure mid flight, damaging more than just your flight controller. In this guide I will

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