the intensity or brightness of the light.

Is how much power a certain light carries emitted by a source. is the time rate of flow of light as measured in lumens (SI unit: lm).

A measurement of light emitted by a source, whether it’s LED, fluorescent, halogen, or incandescent.

The __________ is the unit of intensity (I).

The intensity or the photoelectric effect that is measured on a surface at a specific position or simply the light hitting a surface is known as?

It tells the radiation power that falls onto a surface area.

Determine the visible output of a light source.

Is an instrument that measures light energy intensity and also measures visible light.

REFERS TO A PHYSICAL QUANTITY OR INTENSITY THAT IS INVERSELY PROPORTIONAL TO THE SQUARE OF THE DISTANCE FROM THE SOURCE OF THAT PHYSICAL QUANTITY.

It refers to how bright a light it.

A unit of luminous flux equal to the light emitted in a unit solid angle by a uniform point source of one candle intensity.

A form of electric discharge light source. It consists of a glass tube containing mercury vapor at a low pressure and inert gas like argon and krypton.

Fluorescent lamps have a rated average life span to 30,000 continuous burning hours but with an average of 3 hours burning per start, it could only last for _________ hours.

the process of delivering lighting to spaces. It begins with a conversation with the owner about organizational and user needs.

Casts an illumination from the fixture onto a desired subject or area. Because this is a straightforward radiation, it acts as task lighting that functions to help daily tasks

a soft light with neither the intensity nor the glare of direct light. It is scattered and comes from all directions. Thus, it seems to wrap around objects. It is softer and does not cast harsh shadows.

the unit corresponding to the rate of energy consumption (or power) in an electric circuit needed in this case to light a light bulb.

are the unit describing the amount of light (energy) as seen by the human eye that is given off by the light bulb.

the amount of light that comes out of a light bulb compared to the electrical energy that goes into it.

The _________ are suspended from the ceiling. They help in directing the light downwards. They are usually suspended above table tops or kitchen islands.

These spiraled light bulbs are far more efficient than the standard incandescent bulb. There is a coating on the spirals, which makes this light white.

the most commonly used street light throughout the world. It produces light by running electricity through a mixture of gases, which produces light.

a complete lighting unit, comprised of a light source, together with the parts that distribute the light, position and protect the lamps, and connect the lamps to the power supply.

the total luminous flux on a surface, per unit area. It is a measure of how much the incident light illuminates the surface.

It is measured in lumens in square meter or lux (lx).

a measure of the efficiency of a luminaire in transferring luminous energy to the working plane in a particular area

the SI derived unit of luminous flux, a measure of the total quantity of visible light emitted by a source per unit of time.

Identify this Lighting Bulb/Lamp:

Identify this Lighting Fixture: