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How does light intensity vary with distance form the source?
Light intensity is inversely proportional to the square of the distance: I = k/d2
How is intensity of light related to photons?
Increasing the intensity of light will increase the number of photons arriving per second. Increasing intensity has no effect on photon energy.
How is the intensity of a sound related to the distance between the source and the receiver?
The intensity of a sound will decrease according to an inverse square law.
Why does the intensity of light change with distance?
As light gets farther from the source, the same amount of light spreads out over a larger area.
What happens to the light intensity if you tripled the distance to the source?
For example, assume you are shining a flashlight at the wall. If you move twice as far from the wall, the spot of light will be twice the diameter. If the diameter doubles, then the area of the spot is 4 times as big. Thus, the same light is lighting 4 times as much wall. Thus, the intensity is 1/4 of the original intensity. The intensity varies with the inverse of the square of the distance.
How does light intensity vary with distance form the source?
Light intensity is inversely proportional to the square of the distance: I = k/d2
How is intensity of light related to photons?
Increasing the intensity of light will increase the number of photons arriving per second. Increasing intensity has no effect on photon energy.
How is the intensity of a sound related to the distance between the source and the receiver?
The intensity of a sound will decrease according to an inverse square law.
How is laser light different from incandescent light?
The intensity of light from most light sources is inversely proportional to the square of the distance from the source. So the intensity two meters from an incandescent lamp is one quarter of the intensity at one meter, and at three meters from the lamp the intensity is one ninth of the intensity at one meter. Laser light ideally has the same intensity at any distance.
Why does the intensity of light change with distance?
As light gets farther from the source, the same amount of light spreads out over a larger area.
What adaptations to crabs have related to light intensity?
they cant tan but if they do they will turn purple
What happens to the light intensity if you tripled the distance to the source?
For example, assume you are shining a flashlight at the wall. If you move twice as far from the wall, the spot of light will be twice the diameter. If the diameter doubles, then the area of the spot is 4 times as big. Thus, the same light is lighting 4 times as much wall. Thus, the intensity is 1/4 of the original intensity. The intensity varies with the inverse of the square of the distance.
How does intensity vary with distance from the source?
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.
How do you calculate the light intensity on rate of photosynthesis?
Intensity (W/m^2)= Watts / (4* pi* distance from bulb in meters^2) Intensity can then be compared to rate of photosynthesis at different distances.
What is the light intensity in the arctic?
The light intensity is poop!
What happens to the intensity of light the further it is away from the source?
Light intensity is like gravitation. It changes in accordance with the inverse square law. What's an inverse square? if our number is.......................................... 5 ORIGINAL NUMBER the inverse of this number is.................... 1/5 INVERSE and the inverse SQUARE of this number is 1/52 or 1/25. INVERSE SQUARE But how does this answer your question? As a light source increases its distance from an object (moves farther away) its intensity changes, it becomes less intense. How much less intense? Think of the inverse square law! If your light source moves twice as far away (distance increases by a factor of 2) it becomes 1/4th as intense. (1/4th is the inverse square of 2) Think of shining a flashlight on a tile floor. If you are 5 cm (very close) to the floor, the light from the flashlight will cover one tile and be very intense. However, if you move twice (2 times) as far away, (now you would be 10cm from the floor) you would notice that the same light streaming from the flashlight can now cover four whole tiles! Two times the distance away now covers four whole tiles! Each tile is therefore receiving 1/4th the intensity of the light. Taking it one step further, if you were to move 4 times away (now you are 20cm from the floor)...the light from your flashlight could cover 16 tiles! So, each tile would be recieveing 1/16th the intensity of light. Like I said in the beginning, the same is true when you are working with the Universal Law of Gravitation, so, if you understand light intensity, you will also understand gravitation!
Why intensity decreases as distance from the light source increase?
intensity increases as distance decreases. you cant explain that. scources- bill o'reily
