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Time Allotment
The suggested time for exploring this discussion about the topic of the various light phenomena is 45 minutes.
Discussion
Discussion
Various Light Phenomena
Various Light Phenomena
We are aware that one of the primary energies driving a variety of natural processes is light. It is possible for light to experience reflection, refraction, scattering, and diffraction processes. Light is electromagnetic radiation that causes a variety of natural phenomena as it interacts with the Earth's atmosphere, including the creation of rainbows, the blueness of the sky, the redness of sunsets, and the development of white clouds.
Reflection
Refraction
Scattering
Diffraction
Your reflection on the concave and convex mirror
Your reflection on the concave and convex mirror
A surface that reflects a distinct image is called a mirror. There are two types of images: real images and virtual images. Real images are those that can be created on a screen, whereas virtual images are those that cannot be created on a screen. These pictures are created when light from an object strikes a mirror and is reflected back onto the screen by the mirror. Mirrors come in two different varieties: curved mirrors and plane mirrors. A curved mirror is referred to as a spherical mirror if it is a component of a sphere. Since a plane mirror cannot produce an image that can be displayed on a screen, it always produces a virtual image. The image formed by the spherical mirror can be either real or virtual. Spherical mirrors are of two types: Convex Mirror and Concave Mirror.
Concave Mirror
Concave Mirror
A concave mirror is a curved mirror where the reflecting surface is on the inner side of the curved shape. It has a surface that curves inward, resembling the shape of the inner surface of a hollow sphere.
Convex Mirror
Convex Mirror
Convex Mirror is a curved mirror where the reflective surface bulges out toward the light source. This bulging-out surface reflects light outwards and is not used to focus light.
Mirage
Mirage
Mirages have nothing to do with water at all. In essence, it has to do with how light moves through air. The sun's light rays often pass directly through the atmosphere and into your eye. However, light moves through warm and cold air at various speeds. This occurs when the air is chilly and the earth is quite heated. A layer of air slightly above the ground is heated by warm soil. Light is bent (bent) as it passes through a layer of warm air followed by a cold air layer.
Light from a red laser passes more easily through red cellophane than green cellophane
Light from a red laser passes more easily through red cellophane than green cellophane
As regular glass is colorless, it transmits all colors through windows. All hues except red, which it transmits, are absorbed by transparent materials like cellophane and tinted glass. A transparent object's color is determined by the color of the light it transmits. Everything on the other side appears to be various colors of red when viewed through a red cellophane. Everything appears green when viewed through green cellophane because this material only lets green light pass through. The other colors of light are absorbed by the cellophane. Each color filter (such as glass or cellophane) will often only let the light of the same color pass through.
The white paper appears red because the color white is a reflection of all visible light wavelengths combined, allowing it to reflect the red light that was transmitted onto it, and because there are no other visible light wavelengths in the pitch-black room.
The red dots cannot be seen because they are reflecting the same wavelength of light that is being transmitted to them. Since the red light is the only light in the room when it hits the red dots on the white paper the only wavelength of light that is reflected back is red. There is no contrast between two different colors caused by multiple wavelengths of light so the colors cannot be distinguished from one another.
Due to their absorption of red light and the absence of any other wavelengths of light to reflect, the green dots appear black in the red light. White light strikes a green dot, which appears green because it absorbs all wavelengths but the green one, which is reflected. When every wavelength of light that strikes an item is absorbed, the object turns black.
Why does clothing's color look different in natural light than it does in a store with fluorescent lighting?
Why does clothing's color look different in natural light than it does in a store with fluorescent lighting?
Every color has a different wavelength, and white light is a mixture of all the hues. Although they both appear to be "white light," fluorescent light and sunshine actually include slightly different combinations of these various wavelengths. Only part of the wavelengths that make up white light are reflected off of garments when white light from sources like sunshine and fluorescent light is absorbed by the clothing. These reflected wavelengths are what the retina of the eye actually sees when it judges the "color" of the garment. The color seen depends on the combination of wavelengths. Because of this, a piece of apparel may occasionally appear to be a different hue in a store than it does outside.
Haloes, sundogs, primary rainbows, secondary rainbows, and supernumerary bows
Haloes, sundogs, primary rainbows, secondary rainbows, and supernumerary bows
Haloes
Haloes
A halo is a ring or light that develops around the sun or moon as a result of light from the sun or moon reflecting off ice crystals found in a thin layer of cirrus clouds. The halo is typically perceived as a brilliant, white ring, though it occasionally has color. The image below shows a halo.
Sundogs
Sundogs
Sun dogs are colored light spots that form as a result of light refraction via ice crystals. Depending on where the ice crystals are, they are situated at a distance from the sun of around 22 degrees either left, right, or both. Typically, the hues progress from red, which is closest to the sun, to blue, which is outside the sun dog. Mock suns and parhelia, which means "with the sun," are other names for sun dogs.
Primary Rainbow
Primary Rainbow
Primary Rainbows are formed from the sun’s rays being refracted upon entering a drop, being reflected within the drop, and then refracted again upon leaving the drop.
Secondary Rainbow
Secondary Rainbow
Secondary Rainbows fainter than a primary rainbow. A secondary rainbow appears outside of a primary rainbow and develops when light entering a raindrop undergoes two internal reflections instead of just one (as is the case with a primary rainbow).
Supernumerary Bows
Supernumerary Bows
Supernumerary bows are rainbows bordered by narrow colored bows (green, violet, or orange) due to interference of light waves. They occur inside the primary rainbow or on rare occasions outside the secondary rainbow.
Why clouds are usually white and rain clouds dark?
Why clouds are usually white and rain clouds dark?
Our eyes interpret the mixture of all sunlight's wavelengths as white. Because the water vapor is condensing into raindrops and widening the spaces between them, clouds that are about to rain get darker. There is less light reflection. The rain cloud looks gray or black.
Why the sky is blue and sunsets are reddish?
Why the sky is blue and sunsets are reddish?
The color of the light coming from the sky is impacted by scattering, although the specifics depend on the light's wavelength and the particle's size. When radiation (light) interacts with airborne molecules and particles with diameters smaller than the incoming radiation's wavelength, Rayleigh scatter is the result. In comparison to larger wavelengths, shorter wavelengths scatter more easily. Small particles, like nitrogen oxide (NO2) and oxygen (O2), scatter light and shorter wavelengths (such as visible blue and violet light). Blue light is more heavily scattered in the atmosphere than longer wavelength red light because it is at the short wavelength end of the visible spectrum. The blueness of the sky is a result of Rayleigh scatter.
The explanation for the hues of the sunrise and sunset also involves scattering. In comparison to during the day, when the sun is higher in the sky, sunlight flows through more air at sunset and sunrise because the sun is low on the horizon (as it is ready to set). More molecules in the atmosphere indicate more scattering of violet and blue light away from your eyes. All of the blue and violet light disperses out of your field of vision if the journey is long enough. The other hues keep moving toward your eyes. Sunsets are frequently golden, orange, and red because of this. And because red has the longest wavelength of any visible light, the sun is red when it’s on the horizon, where its extremely long path through the atmosphere blocks all other colors.
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