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It's the distance squared. You are half as far away so, (1/2)2 is 1/4. It's B on the program you're on ;)

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How is the brightness of light determined?

The brightness of light is determined by the intensity of the light source and the distance from the source to the object being illuminated. The closer the object is to the light source and the more intense the light, the brighter the light will appear.


How does the brightness of each bulb in a parallel circuit compare to the brightness of the bulb in a series circuit?

In a parallel circuit, each bulb receives the full voltage of the power source, so all bulbs shine at their full brightness. In a series circuit, the brightness of each bulb decreases as more bulbs are added because the voltage is shared among all bulbs.


What is the nominal range of a light?

The nominal range of a light source refers to the maximum distance at which the light can effectively illuminate its surroundings. This value can vary depending on factors such as the brightness of the light source and the presence of any obstructions in the environment.


How is a shadow affacted by the brightness of the light source?

The brightness of the light source affects the darkness and sharpness of the shadow. A brighter light source produces a darker and more defined shadow, while a dimmer light source creates a lighter and less distinct shadow.


What is the conversion factor from lux to nits and how can it be applied in determining the brightness level of a light source?

The conversion factor from lux to nits is 1 lux 1 nit. This means that the brightness level of a light source in lux is equivalent to the brightness level in nits. To determine the brightness level of a light source, you can measure the illuminance in lux using a light meter and then convert it to nits by applying the conversion factor. This allows for a standardized comparison of the brightness levels of different light sources.

Related Questions

How is the brightness of light determined?

The brightness of light is determined by the intensity of the light source and the distance from the source to the object being illuminated. The closer the object is to the light source and the more intense the light, the brighter the light will appear.


What is the effect of distance on the brightness of a light bulb?

The brightness of a light bulb decreases as the distance from the light source increases because the light spreads out over a larger area. This phenomenon is known as the inverse square law, where the intensity of light diminishes proportionally to the square of the distance from the source.


How can I control the brightness of my LED lights from a distance using a remote dimmer switch?

To control the brightness of your LED lights from a distance using a remote dimmer switch, you can install the dimmer switch between the power source and the LED lights. The remote control will allow you to adjust the brightness levels wirelessly.


If you double the brightness of a light source what else doubles?

If you double the brightness of a light source, the intensity of the light also doubles, as intensity is directly proportional to brightness. Additionally, the amount of energy radiated by the light source and its illuminance at a given distance would also double.


How can I effectively control the brightness of my LED lights from a distance using a remote control dimmer switch?

To control the brightness of LED lights from a distance using a remote control dimmer switch, you can install the dimmer switch between the power source and the LED lights. The remote control will allow you to adjust the brightness levels wirelessly.


What is a difference in the brightness of two lights indicative of?

A difference in the brightness of two lights is indicative of unequal luminous intensity. This can be caused by variations in the power output, distance from the observer, or the type of light source used for each.


What is difference between apparent brightness and true brightness?

Apparent brightness: how bright an object - such as a star - looks to us. True brightness: how bright such an object really is. Defined as: how bright it would look at a standard distance.


What are the 4 c's to consider when reading a primary source?

The four c's are compare contrast connect and you all are ninCompoops! hahahahahah


How does the brightness of each bulb in a parallel circuit compare to the brightness of the bulb in a series circuit?

In a parallel circuit, each bulb receives the full voltage of the power source, so all bulbs shine at their full brightness. In a series circuit, the brightness of each bulb decreases as more bulbs are added because the voltage is shared among all bulbs.


What is the nominal range of a light?

The nominal range of a light source refers to the maximum distance at which the light can effectively illuminate its surroundings. This value can vary depending on factors such as the brightness of the light source and the presence of any obstructions in the environment.


What is an electrically produced source of brightness that rhymes with kite?

light


How is a shadow affacted by the brightness of the light source?

The brightness of the light source affects the darkness and sharpness of the shadow. A brighter light source produces a darker and more defined shadow, while a dimmer light source creates a lighter and less distinct shadow.