light
Light can be produced is two ways: man-made and naturally. Most of the time it comes from the sun.
Light is a form of electromagnetic radiation. It is the only way us humans can experience electromagnetic radiation from our eyes. It travels in waves known as electromagnetic waves.
The sun radiates Ultraviolet light, which are more commonly known was UV rays. These pacific waves are not visible to the human eye, which are measured in wavelength of m.
When we talk about light we are mentioning visible light. Light is measured depending on the wavelength of the beam. Wavelengths are measured using nanometers (nm). Depending on what the wavelength, the colour that we see will change. The wavelength of visible light varies from 400 nanometers (nm), which is violet, to 700nm, which is red. This means that the colour violet has a smaller wavelength than red.
The beams pretty much travel in straight line because of the visible light beams have such small wavelengths. The ‘speed of light’ that is often referred to is how fast light travels in space through a vacuum. It slows down when it reaches our atmosphere due to the elements surrounding it. Light can also be reflected by something. Reflection occurs when a beam of light rebounds of light rebounds off something, a mirror as such. A ray of incidence is the beam of light that travels towards the reflective surface. A ray of reflection is what we call the beam that travels away from the surface.
When light travels through a medium, what we see can be altered. A medium can be water, glass, etc. When the light hits the surface of the medium, it usually splits in two. Some of the light reflects off of the medium, whereas the other part continues to travel through the medium. The light that travels through the medium bends. Depending on what the medium is, the light will bend at a different angle.
Light is a form of electromagnetic radiation. It is the only way us humans can experience electromagnetic radiation from our eyes. It travels in waves known as electromagnetic waves.
The sun radiates Ultraviolet light, which are more commonly known was UV rays. These pacific waves are not visible to the human eye, which are measured in wavelength of m.
When we talk about light we are mentioning visible light. Light is measured depending on the wavelength of the beam. Wavelengths are measured using nanometers (nm). Depending on what the wavelength, the colour that we see will change. The wavelength of visible light varies from 400 nanometers (nm), which is violet, to 700nm, which is red. This means that the colour violet has a smaller wavelength than red.
The beams pretty much travel in straight line because of the visible light beams have such small wavelengths. The ‘speed of light’ that is often referred to is how fast light travels in space through a vacuum. It slows down when it reaches our atmosphere due to the elements surrounding it. Light can also be reflected by something. Reflection occurs when a beam of light rebounds of light rebounds off something, a mirror as such. A ray of incidence is the beam of light that travels towards the reflective surface. A ray of reflection is what we call the beam that travels away from the surface.
When light travels through a medium, what we see can be altered. A medium can be water, glass, etc. When the light hits the surface of the medium, it usually splits in two. Some of the light reflects off of the medium, whereas the other part continues to travel through the medium. The light that travels through the medium bends. Depending on what the medium is, the light will bend at a different angle.