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allow only parallel rays from strem of rays
Power of the X-ray tube, voltage applied, current intensity, anticathode type, filters, collimator, tube design, working atmosphere, etc.
it says that on some websites
The cost of a laser collimator depends on the type of telescope you have. One could be looking at spending anywhere between $70 and $200 on a laser collimator.
A collimator is used to "bore sight" a scope. It will help ensure that the scope is close to being properly aligned.
the mission was to find white dwarfs a category of stars
collimator
Tungsten
X-ray machine can't see though led
xray machine (for the farm animals) its what the vet uses on the farm
An x-ray is used as a non-invasive way to visualize the inside of your body.
Lines will be formed at the opposite side of the observer if the ruled surface of grating faces the collimator due to reflection