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 about Optics & Waves
Wien’s law, also known as the displacement law, reveals the wavelength at which any object emits the majority of its energy. The formula used to calculate the wavelengths using Wien’s law is λmax (wavelength) equals 3 x 10^7 divided by temperature.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 >
Stroboscopes appear to freeze an object in cyclical motion by flashing light repeatedly at the same point during the object's cycle. An example of this effect is flashing a stroboscopic light on a clock once per minute. In this case, the second hand appears still, though it has rotated fully.Full Answer >
Shadows are created when an object, animal or person blocks out a portion of a light source. Shadows form in the opposite direction of whatever is blocking that source. For example, if the sun is shining to the right of someone, a shadow appears on that person's left side.Full Answer >