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What is collimation error in angular measurement?
Is error comes when the line of sight does not coincide with the optical axis of theodolite.
Wireless mice use what two technologies?
Wireless mice can use RF (Radio Frequency) or IR (Infra Red) technologies. IR requires line of sight to the mouse receiver, similar to a television remote control. RF is usually the preferred method, since it does not require line of sight. Hope that helps :)
Is a type of wireless technology that doesn't require a clear line of sight?
Bluetooth
What is the advantage of RF over IR?
Because RF does not require line-of-sight.
What do people observe?
People with working eyes, optic nerves and optical centers in their brains observe anything that is within their line of sight that catches their attention.
What is the Line of sight calculation?
what is the line of sight equation
You are planning to implement a wireless network in a doctor's office The network will be contained within the building and will require no outside links Will you be concerned about line-of-sight is?
Yes. Line of sight issues are a concern insdide a building, just as they are outside a building.
What is the imaginary line called between a characters eyes and the subject?
oof
You are planning to implement a wireless network in a doctor's office The network will be contained in the building and will require no outside links Will you be concerned about line-of-sight issues?
No.
Does bluetooth require line of site?
No, infrared is line of sight but bluetooth is not. Hence why if you have a bluetooth tv remote and it gets stuck in the couch, your tv will do crazy things even if it is not pointed at the tv.
What is collimation error?
error in alignment between the optical axis of a telescope & the declination. it is line set out by the optical axis of the instrument ( level). so it is just an imaginary line that describes the ray of light that allows us to read different values from the leveling staff. this term arose from the fact that in differential leveling in surveying we must construct horizontal line of sight, but due to collimation error the collimation line (i.e. line of sight) will not be 100% horizontal (by horizontal we mean tangent the level surface at the instrument position), instead it will be slightly deviated. so what we are looking to achieve when we eliminate the collimation error (using the 2 peg test) is a horizontal line of collimation.
What is the difference between radio horizon and optical horizon?
radio signal bents around the curvature of earth and hence travel longer distance than the line of sight signal. At ultra high frequencies signal follows the line of sight path and hence maximum communication distance is limited due to curvature of earth for given height of transmitting and receiving antenna
