As for the amout of light that is required it is not regulated however every municipal jurisdiction that regulates building construction has a regulation regarding the amount of window space each living unit must have. In most areas it is 10% of the floor space of that unit, however this may vary depending upon the regulations.Window space can be measured and regulated. Light may possibly be measured but it is impossible to regulate it. Hope this helps. Bob the builder.
When a lamp is connected to a power supply the total amount of light increases.
compound light microscopeCompound Light Microscope
I took AP Physics this year and from what my teacher told the class, from a light bulbs energy, about only 5% of it is transmitted as light. The other 95% is heat.
40 watts. I did an experiment on this. Go do one and see for yourself. Sheesh. -_-
The 'sparkling' of diamonds is due to the way the diamonds are cut, plus the fact that diamonds have a high index of refraction results in the total internal reflection of light. The high index of refraction means that diamonds have a very small minimum critical angle (recall the diamond to vacuum in the observation table). The minimum critical angle in a diamond is 24.4 degrees. Therefore, a lot of the incident light experiences total internal reflection inside the diamond. A ray of light can reflect several times in the diamond before exiting through the top of the diamond. Fibre optics is a technology that uses light to transmit information along a glass table. To achieve the light not escaping as it travels through the cable, it must have a small critical angle so that the light entering it will have an angle of incidence greater than the minimum critical angle for this medium.
Brightness refers to amount of light, 100% is maximum light and 0% is minimum light or no light - black.
the ISO setting in your camera controls the shutter speed therefore increasing or reducing the amount of light captured by the film/photocell
The iris contracts to allow less light to enter the eye. This is controlled by the autonomic nervous system in response to changing light conditions, helping to regulate the amount of light reaching the retina.
Exposure is the combination of aperture and shutter speed. Aperture (measured in f-stops) determines the amount of light that will enter your camera. Shutter speed (measured in seconds) determines the amount of time that the shutter will stay open to allow light to enter.
The speed of light is minimum in Glass. It is because light travels at minimum speed in solids.
The iris controls the amount of light reaching the retina by adjusting the size of the pupil. In bright light, the iris contracts to make the pupil smaller, reducing the amount of light that enters the eye. In low light, the iris expands to dilate the pupil, allowing more light to enter the eye.
The cornea and the pupil are the parts of the eye that allow light to enter. The cornea acts as a protective outer layer that helps to focus light, while the pupil is the opening in the center of the iris that regulates the amount of light entering the eye.
You need to purchase a Fluorescent dimmer switch, no circuit can dim the brightness of the light safely.
An example of an absolute threshold is the minimum amount of light that a person can detect in a dark room. This is the point at which the person first becomes aware of the presence of light.
The iris controls the amount of light entering the eye by adjusting the size of the pupil. In bright light, the iris contracts, making the pupil smaller to reduce the amount of light. In dim light, the iris expands, making the pupil larger to allow more light to enter.
The circular opening of the eye that controls the amount of light entering is called the pupil. It dilates in low light to allow more light to enter and constricts in bright light to reduce the amount of light entering the eye.
Leaves can adjust the angle at which they are positioned to reduce the amount of light they receive. They can also absorb some of the light energy through the pigments in their cells, helping to protect themselves from damage due to excess light. Additionally, leaves may have structures like hairs or epicuticular wax that can scatter or reflect light, further reducing the amount that reaches the inner layers of the leaf.