The instrument tag has no wiki summary.
0
votes
0answers
27 views
Differential BJT Amplifier [closed]
I am trying to solve this assignment
Consider this schematic (the BJT's are in the effective area, with
$\beta=200$ so as to $i_e\approx i_c$).
Define the common and differential gains, ...
1
vote
4answers
314 views
What is a strain gauge and how do I use one?
As the title says, I have no idea what these things are or how to get or use one. Can I receive a simple explanation or links to one? I'm a computer engineer so I have very little physics/mechanical ...
0
votes
0answers
36 views
The things to consider when choosing a mesh for an electron detector (MCP detector)
I am designing a electron velocity map imaging setup. I need a copper mesh just infront of the detector to accelerate the electrons towards the MCP detector. I am doing the instrument design for the ...
4
votes
2answers
146 views
How is the Hanbury-Brown and Twiss effect used to measure the size of stars?
I understand what an Hanbury Brown and Twiss (HBT) interferometer does, but how can this be used to measure the apparent angular diameter of some object?
What is the mathematical explaination?
1
vote
1answer
75 views
Instrumentation handbook [closed]
Does anyone have any suggestion on a handbook of instrumentation?
In particular NIM instrumentation...
I would like an approach which will explain the techniques and how to use NIM modules.
In ...
3
votes
2answers
38 views
Particular targets of high angular resolution infrared telescopes
I work in the field of infrared interferometry, specifically instrumentation.
As such, I need to be aware of the science goals of such an instrument. Is there a quick list of important and ...
6
votes
3answers
2k views
What is a spectrometer, and why are they so useful in science?
I've heard reference to many telescope and spacecraft that have a device known as a spectrometer, and I'm curious, what is the purpose of these device? What's the working principal behind them and ...
3
votes
1answer
88 views
What the name of the evacuated glass gadget with black and white vanes that turn when a light is applied?
I remember a glass device my physics teacher had at high school which
Contained some vanes mounted somehow on a vertical axis, which were all black on one side and white on the other
Was in a ...
1
vote
1answer
217 views
Open Ended/ Close Ended instruments?
Close ended instruments have twice the wavelength, because the wave must travel twice the distance to repeat itself.
Why must a wave reach a lower density medium (air in this case) to repeat? When ...
2
votes
1answer
98 views
Is there a way to measure atmosperic pressure without an instrument?
Just that . I am not too much concerned about the accuracy of measurements .
1
vote
1answer
103 views
Will timbre/quality be different if two different people play the same guitar? [closed]
Will timbre/quality be different if two different people play the same guitar? Assume that frequency/pitch and amplitude are same.
