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It's an inverse-square law - for instance, double the distance, and the intensity will be reduced by a factor 1/4.This assumes that there is nothing absorbing the light (for instance, fog); if there is, the intensity in the above example will of course be even less than 1/4 the original intensity.
What else can I help you with?
If cardboard were four times the unit distance away from the bulb how much would the light falling on the cardboard be?
The intensity of light falling on the cardboard would be 1/16th of the original intensity because the intensity of light is inversely proportional to the square of the distance from the source.
Why does moving away from a radio affect the loudness you hear?
because sound waves spread out, intensity decreases with distance from the source.
What is the lighting factor formula?
The lighting factor formula is used to calculate the amount of light at a specific location based on the intensity of the light source, the distance from the source, and any intervening factors that may affect the light levels, such as reflectivity or obstructions. The formula typically involves variables such as illuminance (lux), distance (meters), and factors like reflectance and transmittance. The specific formula can vary depending on the context and the standards being followed.
The sound of a bullfrog attracts a mate How much quieter is the sound if the mate is 4 times further away if the sound follows the inverse square law?
Well, it has to follow the inverse square law, so that as distance increases, the sound intensity drops by the square of the proportionate change in distance. The intensity will be 1/16 at 4 times the distance.
How does sound vary with distance?
There is the 1/r law for sound pressure and distance. Double the distance from a sound source gives 6 dB less sound pressure level. Scroll down to related links and look at "Sound pressure and the inverse distance law ".
If you are reading a book and you move twice as far away from the light source how does the brightness at the new distance compare with that at the old distance?
The brightness will decrease by a factor of 4 at the new distance compared to the old distance. This is because the brightness of a light source follows an inverse square law, where the intensity decreases as the square of the distance.
What is the inverse square law of energy?
Some physical effect is reduced in proportion to the square of the distance from it's source. It applies to most forces or energies that radiate from a single point, like a light bulb. If you move twice as far from the light source, you will receive only a quarter as much light. And if you move three times as far from the bulb, you will receive only 1/9 as much. 1/4 is the inverse of 22 and 1/9 is the inverse of 32. If you are using the acoustics it is different, because the sound pressure is inversely proportional to the distance (1/r) from the source. That is the inverse distance law. Scroll down to related links and look at "Inverse Distance Law".
The intensity of a sound describes?
Its loudness at a particular distance
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.
Difference between intensity and magnitude?
Magnitude is a measure of the energy released by the earthquake - it is an absolute value and does not vary with where it is measured. Intensity measures the strength of the shaking at a particular location and will vary with distance, substrate conditions and other factors. It is a subjective measure which depends on observation, not measurement. The reference below sets it all out for you.Is also an answer but here's another answer:This is my answer:D(Magnitude / Intensity Comparison)(Magnitude and Intensity measure different characteristics of earthquakes. Magnitude measures the energy released at the source of the earthquake. Magnitude is determined from measurements on seismographs while Intensity measures the strength of shaking produced by the earthquake at a certain location. Intensity is determined from effects on people, human structures, and the natural environment.)
In radiology what is the term SID?
SID stands for Source to Image Distance. This is the distance between the source of photons (anode) and the image receptor.
Intensity of the wave vs. the speed of the wave?
height is the intensity, the distance covered by a wave divided by the time it takes is the speed. (ie. short waves = low intensity, fat waves = slow waves)
