tech question

[waggythegeek]

Can you guys start a conversation about something tech-y that most everyone on this forum would understand, but my irritating friends who read over my shoulder know nothing about? U see where I'm going...

[Enderman]

The light intensity of LED strips is inversely proportional to the square of the distance

Therefore the faster away your components are from the led strip the brightness will decrease at the rate of 1/x^2 where x is the linear distance between the light source and component.

 

Having a larger x distance will decrease the brightness but also allow for more erroneous reflections off of other internal components and create a more uniform lighting upon the surface of the component you are trying to illuminate.

[Imabigmac]

It amazes me when people believe they can just invade peoples person zone. Perhaps you need one of these, http://solutions.3m.com/wps/portal/3M/en_US/3MScreens_NA/Protectors/

 

 

The light intensity of LED strips is inversely proportional to the square of the distance

Therefore the faster away your components are from the led strip the brightness will decrease at the rate of 1/x^2 where x is the linear distance between the light source and component.

And that is assuming there is no refraction of the light and or interference from WiFi. 

[Cactu]

The light intensity of LED strips is inversely proportional to the square of the distance

Therefore the faster away your components are from the led strip the brightness will decrease at the rate of 1/x^2 where x is the linear distance between the light source and component.

 

Having a larger x distance will decrease the brightness but also allow for more erroneous reflections off of other internal components and create a more uniform lighting upon the surface of the component you are trying to illuminate.

you sir are amazing because i didnt know that and it was amazing

[Enderman]

you sir are amazing because i didnt know that and it was amazing

This is also in effect for anything that radiates in the 3 dimensions of space, such as radio waves, sound, and any other kind of wave.

[waggythegeek]

This is also in effect for anything that radiates in the 3 dimensions of space, such as radio waves, sound, and any other kind of wave.

DAMMIT NO CHANGE TOPICS WE JUST LEARNED THIS IN SCHOOL ABORT ABORT ABORT

[Enderman]

DAMMIT NO CHANGE TOPICS WE JUST LEARNED THIS IN SCHOOL ABORT ABORT ABORT

Example[edit]

Let the total power radiated from a point source, for example, an omnidirectional isotropic antenna, be P. At large distances from the source (compared to the size of the source), this power is distributed over larger and larger spherical surfaces as the distance from the source increases. Since the surface area of a sphere of radius r is A = 4πr ², then intensity I (power per unit area) of radiation at distance r is

The energy or intensity decreases (divided by 4) as the distance r is doubled; measured in dB it would decrease by 6.02 dB per doubling of distance.

Acoustics[edit]

In acoustics one usually measures the sound pressure at a given distance r from the source using the 1/r law.^[10] Since intensity is proportional to the square of pressure amplitude, this is just a variation on the inverse-square law.

Example[edit]

In acoustics, the sound pressure of a spherical wavefront radiating from a point source decreases by 50% as the distance r is doubled; measured in dB, the decrease is still 6.02 dB, since dB represents an intensity ratio. The behaviour is not inverse-square, but is inverse-proportional (inverse distance law):

The same is true for the component of particle velocity  that is in-phase with the instantaneous sound pressure :

In the near field is a quadrature component of the particle velocity that is 90° out of phase with the sound pressure and does not contribute to the time-averaged energy or the intensity of the sound. The sound intensity is the product of the RMS sound pressure and the in-phase component of the RMS particle velocity, both of which are inverse-proportional. Accordingly, the intensity follows an inverse-square behaviour:

Field theory interpretation[edit]

For an irrotational vector field in three-dimensional space the inverse-square law corresponds to the property that the divergence is zero outside the source. This can be generalized to higher dimensions. Generally, for an irrotational vector field in n-dimensionalEuclidean space, the intensity "I" of the vector field falls off with the distance "r" following the inverse (n − 1)^th power law

,

given that the space outside the source is divergence free.^{[citation needed]}

[DarkEnergy]

-snip-

 

Night theme loves you. 

 

 

 

 

 

[Cactu]

This is also in effect for anything that radiates in the 3 dimensions of space, such as radio waves, sound, and any other kind of wave.

im in the 8th freaking grade and love math. this is AWESOME to me

[Enderman]

Night theme loves you. 

 

 

 

 

 

 

I know, I use night theme

[nicholician]

Example[edit]

Let the total power radiated from a point source, for example, an omnidirectional isotropic antenna, be P. At large distances from the source (compared to the size of the source), this power is distributed over larger and larger spherical surfaces as the distance from the source increases. Since the surface area of a sphere of radius r is A = 4πr ², then intensity I (power per unit area) of radiation at distance r is

The energy or intensity decreases (divided by 4) as the distance r is doubled; measured in dB it would decrease by 6.02 dB per doubling of distance.

Acoustics[edit]

In acoustics one usually measures the sound pressure at a given distance r from the source using the 1/r law.^[10] Since intensity is proportional to the square of pressure amplitude, this is just a variation on the inverse-square law.

Example[edit]

In acoustics, the sound pressure of a spherical wavefront radiating from a point source decreases by 50% as the distance r is doubled; measured in dB, the decrease is still 6.02 dB, since dB represents an intensity ratio. The behaviour is not inverse-square, but is inverse-proportional (inverse distance law):

The same is true for the component of particle velocity  that is in-phase with the instantaneous sound pressure :

In the near field is a quadrature component of the particle velocity that is 90° out of phase with the sound pressure and does not contribute to the time-averaged energy or the intensity of the sound. The sound intensity is the product of the RMS sound pressure and the in-phase component of the RMS particle velocity, both of which are inverse-proportional. Accordingly, the intensity follows an inverse-square behaviour:

Field theory interpretation[edit]

For an irrotational vector field in three-dimensional space the inverse-square law corresponds to the property that the divergence is zero outside the source. This can be generalized to higher dimensions. Generally, for an irrotational vector field in n-dimensionalEuclidean space, the intensity "I" of the vector field falls off with the distance "r" following the inverse (n − 1)^th power law

,

given that the space outside the source is divergence free.^{[citation needed]}

 

 

No Wikipedia here.