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What else can I help you with?
What happens to the illuminance when you move away from the light source?
The intensity decreases.
Classify magnet according to materials or source of magnetism?
no comment
What is the unit of luminious intensity?
candela--------------------------------------------The official international definition of candela (1979) is:"The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540 x 10e12 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian".
Why a fuzzy shadow is formed?
The size of shadow an object casts, is directly related to the position of a light source. the higher up a light source is in relation to the object, the shorter the shadow will be. Shadows cast by objects lit by the sun in the morning or evening are long, because the sun is low in the sky. At mid-day, the shadow is shorter because the sun is higher. Try it yourself with a torch - and see !
When food is irradiated with gamma rays from a cobalt-60 source does the food become radioactive?
No. Gamma rays will not make materials radioactive.
What determines the brightness of light?
The brightness of light is determined by the intensity of the light source, which is the amount of light energy emitted per unit of time. The greater the intensity of the light source, the brighter the light will appear.
What is the light intensity formula and how can it be used to measure the brightness of a light source?
The light intensity formula is I P/A, where I is the intensity of light, P is the power of the light source, and A is the area over which the light is spread. This formula can be used to measure the brightness of a light source by calculating the intensity of the light emitted per unit area. The higher the intensity value, the brighter the light source is perceived to be.
How is a shadow affected by the brightness of the light source?
The brightness of the light source determines the intensity of the shadow. A brighter light creates a sharper and more defined shadow, while a dimmer light results in a softer and less defined shadow. Additionally, the size of the light source can also affect the sharpness of the shadow edges.
How is the brightness of a light determined?
The brightness of a light is determined by its intensity, which is the amount of light energy emitted per unit of time. This intensity is measured in units such as lumens or lux. The higher the intensity of a light source, the brighter it appears to the human eye.
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.
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.
Intensity of light depends on the?
The intensity of light depends on the amplitude of the light waves, which represents the strength or power of the light wave. The intensity is also affected by the distance the light has traveled from the source, which can cause the light to spread out and decrease in intensity. Additionally, materials through which light passes can affect its intensity through absorption or scattering.
How do you distinguish colour and brightness?
Color refers to the perceived hue of an object or light source, determined by the wavelengths of light it reflects or emits. Brightness, on the other hand, refers to the intensity of light emitted or reflected by an object, regardless of its color. Color can be affected by factors like pigmentation, while brightness is influenced by the amount of light hitting a surface.
What is the difference between lumens, candela, and lux, and how do they each measure the brightness or intensity of light?
Lumens measure the total amount of light emitted by a source, candela measures the intensity of light in a specific direction, and lux measures the amount of light that falls on a surface. Lumens indicate overall brightness, candela measures brightness in a specific direction, and lux measures brightness on a surface.
What factors affect the intensity of an electromagnetic wave?
The intensity of an electromagnetic wave is affected by factors such as the amplitude of the wave, the frequency of the wave, and the distance from the source of the wave.
What is the difference between candela, lumens, and lux, and how do they each measure the brightness or intensity of light?
Candela measures the intensity of light emitted in a specific direction, lumens measure the total amount of light emitted by a source, and lux measures the amount of light that falls on a surface. Candela is used for directional light sources like flashlights, lumens for overall brightness of a light source, and lux for the brightness of light on a surface.
What is the function of the illumination intensity knob?
The illumination intensity knob controls the brightness of the light source in a microscope. By adjusting this knob, you can increase or decrease the amount of light that shines on the specimen, helping to improve visibility and contrast for better microscopy observations.
