A common example of diffraction of light is looking at an object that is partially immersed in water, where the object appears to be in a different place. Sound diffraction is usually not visible, but it is audible through walls or other solid objects.Know More
Diffraction of light is the easiest to recognize, since it takes only a glance. Looking at something beneath the surface of the water is one example. In spear fishing, the fish appears to be somewhere it is not due to how the water affects light. Water droplets also diffract light in the same way.
The diffraction of sound is more difficult to pinpoint, but is most noticeable when solid items, such as walls or columns, are between the listener and the source of the sound. Sound also diffracts when it passes through water in a similar fashion to light. The waves slow down when passing through water, distorting the end result.
A good way to visualize diffraction is to imagine ripples or waves in water. If the waves are moving in a uniform line and the middle of the line hits a pole or wall, the waves bend around the obstacle and their form is changed, just like sound and light waves.Learn more in Optics & Waves
A frame of reference is a method of describing the position, velocity and acceleration of an object. This is usually some type of coordinate system.Full Answer >
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.Full Answer >
An observer's perception of an object being examined changes with a magnifying lens because the lens bends the light rays from the object, thus distorting the size of the image formed, making it appear bigger. Light rays bend due to a change in density as they move from air to the glass that forms the lens. If light rays did not bend, no magnification would occur.Full Answer >
A spectroscope relies on separating light into its component parts because of the information that can be obtained from examining the wider spectrum of colors that composes white light as it is reflected off an object. Such information can include elemental composition as well as how much of a particular element makes up the object that is being looked at.Full Answer >