In physics, a projectile is an object to which some velocity is provided and is then left to move in the gravitational field under the influence of only the gravitational force. Examples of projectiles include a ball thrown by a player or hit with a baseball bat.
The movement of a projectile is divided into two perpendicular components: the horizontal and the vertical. A projectile shot anywhere between these two directions will have some motion in both directions and a curved trajectory. The path followed by the projectile after being fired is known as its trajectory. The range of a projectile is the horizontal distance covered by it.Learn More
A megaphone directs or funnels the voice to a specific direction, and it also regulates the distribution of sound waves from the mouth to the open medium. The secret behind the workings of a megaphone is in its shape.Full Answer >
The brilliant sparkle of a diamond occurs from refraction and the total internal reflection of light. The precisely cut surfaces of a diamond refract or redirect incoming light until it is reflected back out of the facets of the top to the observer's eyes.Full Answer >
Mirror reflections are used in the construction and working of solar cookers, solar heaters, periscopes, binoculars, looking mirrors, microscopes, cameras and in a kaleidoscope. Apart from plane mirrors, reflection of light from convex and concave mirrors is used in everyday applications too.Full Answer >
Magnification makes objects look bigger, while resolution increases the amount of detail that can be seen on an object. Microscopes are used to both magnify objects and resolve them.Full Answer >