to measture the length of objects
A meter is defined as the distance travelled by light in free space in 1/299,792,458th of a second.
it is use to measure electric potential (voltage).
To measure length, height, width of an object.
unit of length. the distance travelled by light in vaccum in 1/299792458second is called 1 meter
Measurement of length.
The first handheld light meter was invented by Arthur James Dalladay in 1932. He created a light meter that photographers could use to measure the intensity of light for more accurate exposure settings.
To use a light meter with a film camera, follow these steps: Set the ISO/ASA on the light meter to match the film speed of your camera. Point the light meter towards the subject you want to photograph. Press the button on the light meter to measure the light. Adjust the aperture and shutter speed on your camera based on the light meter reading. Take the photo using the settings recommended by the light meter. Remember to adjust the settings as needed for different lighting conditions.
If you mean a light meter that is used in a photographic studio, then it measures the light that hits the 'subject' from the studio lighting, the light meter then tells you what you need to set your camera to, for the correct exposure.
lux meter or light meter
800 meter is equl to how many kilometers
100 quintillionths of a light year are in a meter http://en.wikipedia.org/wiki/Light-year
Incident light is the light that falls from the source onto the subject. It is usually measured with a hand-held instrument (often digital, these days) called an incident-light meter. Readings are usually taken from the subject's position, with the receptor-cell of the meter facing back toward the camera. Some incident-light meters are dedicated to that function. Others can measure "reflected" light (light that is reflected from the subject) and have a module for measuring incident light as well.
To measure blue light exposure using a blue light meter, simply point the meter towards the light source and take a reading. The meter will provide a numerical value indicating the intensity of blue light present. This value can help you track and monitor your blue light exposure over time.
Energy is transferred to a light meter through the incident light that falls on its sensor. The sensor then converts the light energy into an electrical signal that is proportional to the intensity of the light. This electrical signal is used to determine the light level and provide a reading on the light meter.
One meter is about 0.000,000,000,000,000,105,7 light-years.Calculation: As a light-year is 9,460,730,472,580,800 meters, one meter equals 1/9,460,528,400,000,000 light-years = 1.057,000,834,024,615,4 × 10-16 light-years - or about 105.7 atto-light-years.
to measture the length of objects