DaveE's latest activity
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DaveE replied to the thread Undergrad How do I stretch a laser from a beam into a sheet?.Vertical and horizontal in this case. -
DaveE replied to the thread How to correctly type "-i.e." in LaTeX?.\text{,i.e.,} is one way, which looks like this: ##\text{,i.e.,}## or did you want ##\text{-i.e.,}##? Your post was a bit confusing...
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DaveE replied to the thread Undergrad How do I stretch a laser from a beam into a sheet?.You could just buy a laser level. They've already figured it out for you. OTOH, they won't be as bright as you want because they don't...
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DaveE replied to the thread High School Analog power supply output question.I think this circuit will work the same if you replace all of the transistors with a piece of wire (OK, maybe a forward biased diode)...
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DaveE replied to the thread High School Analog power supply output question.Normally I reserve this post for people that don't provide a schematic, but in this case I'll make an exception.
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DaveE reacted to Averagesupernova's post in the thread High School Analog power supply output question with
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If you cleaned that schematic up to make it more readable...... - .....it still won't work. -
DaveE reacted to Baluncore's post in the thread Undergrad How do I stretch a laser from a beam into a sheet? with Like.
If you want a polygonal mirror, find yourself an old laser printer. Traditional laser printers have a rotating polygonal mirror with...
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DaveE reacted to sophiecentaur's post in the thread Undergrad How do I stretch a laser from a beam into a sheet? with Like.
Or a very light vibrating mirror on a pivot. Frequency wouldn't need to be exceptionally high to allow the drops to have a long...
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DaveE reacted to renormalize's post in the thread Undergrad How do I stretch a laser from a beam into a sheet? with Like.
Yes, planar-scanned lasers are often used for special-effects in movies. An example is this shot from the opening of Aliens, where a...
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Fine. "Smart enough" is not something to be worried about. Effort and interest are under-rated, very often. Better advice may more...
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DaveE replied to the thread Undergrad How do I stretch a laser from a beam into a sheet?.You could also consider scanning a 1D beam in a plane faster than your shutter speed or the rain drops. This may be easier. Something...
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DaveE replied to the thread Undergrad How do I stretch a laser from a beam into a sheet?.It would be quite unusual for a laser to be converging away from the exit. Normally the beam waist will be near the aperture, and in...
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DaveE replied to the thread Uncertainty in pursuing Engineering.Sorry, I don't have great study advice. But, these basic math subjects (Trig, Calculus) aren't just hurdles to overcome to get an EE...
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DaveE replied to the thread Undergrad How do I stretch a laser from a beam into a sheet?.Yes, most likely. Maybe two if you want 1D collimation.
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Mono Lake to Bishop, CA, 65 miles, has lots of geology. A short N-S tour here. https://en.wikipedia.org/wiki/Mono_Lake map and guide...
