If the source is giving out a power of W watts equally in all directions, the power density at a distance of R is given by:
W / (4.pi.R-squared) watts per square metre.
The rate at which light energy flows through a giver area of space is referred to as intensity
A light bulb gives off mainly light energy as well as heat energy. When electricity flows through the filament in the bulb, it gets hot and emits light.
converted into heat and light energy.
When electrical current flows through the metal filament of a light bulb, electrical energy is converted to heat and light energy. The filament heats up due to the resistance it provides, emitting light as it reaches high temperatures.
Electricity provides the energy to light a light bulb. When the electricity flows through the filament in the bulb, it generates heat and light.
The rate at which light energy flows through a giver area of space is referred to as intensity
The answer is 'luminous intensity' which, in SI, is expressed in lumens.
A light bulb gives off mainly light energy as well as heat energy. When electricity flows through the filament in the bulb, it gets hot and emits light.
kinetic energy and light energy.
Electrical energy is converted into light and heat when electric current flows through the metal filament of a light bulb.
Heat, which then produces light.
converted into heat and light energy.
The electrical energy is converted to both heat and light energy.
When electrical current flows through the metal filament of a light bulb, electrical energy is converted to heat and light energy. The filament heats up due to the resistance it provides, emitting light as it reaches high temperatures.
Electricity provides the energy to light a light bulb. When the electricity flows through the filament in the bulb, it generates heat and light.
When an electric current flows through the metal filament of a light bulb, electrical energy is converted to heat and light energy, producing the illumination that we see as light. The filament heats up due to the resistance to the current passing through it, causing it to emit visible light.
The useful energy in a light bulb is the light that it emits. When electricity flows through the filament of a light bulb, it produces light energy that we can see and use for illumination.