I believe it is a white masthead light.
When connecting a volt meter to a light bulb to measure the voltage of the light bulb, run a third wire from where the wire enters the bulb to one terminal of the voltmeter and a fourth wire from the other side of the bulb to the other terminal of the voltmeter.
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.
The display meter on the Cardio Orbitrek DF005 shows a persons time, speed, distance, and pulse. The products display is also capable of showing the amount of calories burned as the individual is using it.
4Meter per second.
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
A meter - to display the cost of the journey !
A: It is a device or meter that read frequency as an input and display its value
100 quintillionths of a light year are in a meter http://en.wikipedia.org/wiki/Light-year
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.