LightningInAJar's latest activity
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LLightningInAJar replied to the thread High School NASA Data Site Down.Thanks. Hopefully eveeything gets funded again soon.
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LAlmost, but it works. Plus one NASA site is still up. https://swe.ssa.esa.int/# https://soho.nascom.nasa.gov/sunspots/
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LLightningInAJar replied to the thread High School NASA Data Site Down.What is there website? Same type of sun images comparable to a telephoto lens and solar filter?
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Lhttps://sdo.gsfc.nasa.gov/data/ Since the government shutdown this site stopped updating photos of the sun and now they seem to have...
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LLightningInAJar reacted to DaveE's post in the thread Undergrad How do I stretch a laser from a beam into a sheet? with
Like.
Either will spread the beam in the far field. -
LLightningInAJar reacted to Gleb1964's post in the thread Undergrad How do I stretch a laser from a beam into a sheet? with Like.
There are standard optical components used for generating lines from laser beams, known as Powell lenses. These lenses are manufactured...
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LLightningInAJar replied to the thread Undergrad How do I stretch a laser from a beam into a sheet?.The one I got was half a circle so flat on one side and convex on the other. Is the version in your picture what I'm looking for?
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LLightningInAJar reacted to TSny's post in the thread Undergrad How do I stretch a laser from a beam into a sheet? with Like.
I don't know. A highly reflective metal surface or mirror would not absorb very much. Each ray of light in the beam obeys the law of...
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LLightningInAJar replied to the thread Undergrad How do I stretch a laser from a beam into a sheet?.That is with the laser level giving a somewhat vertical line beam?
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LLightningInAJar replied to the thread Undergrad How do I stretch a laser from a beam into a sheet?.That is interesting. How much light do you think gets absorbed by the mug? I wish I could visualize how that happened. Looks like you...
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LLightningInAJar reacted to TSny's post in the thread Undergrad How do I stretch a laser from a beam into a sheet? with Like.
You might experiment with fanning out the beam by reflecting off a smooth cylindrical surface. Here, I used a ceramic mug.
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LLightningInAJar replied to the thread Undergrad How do I stretch a laser from a beam into a sheet?.I initially got a cylindrical lens on Amazon for under $8. It didn't work at all.
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LLightningInAJar replied to the thread Undergrad How do I stretch a laser from a beam into a sheet?.What is the least expensive solution without and with moving parts? I already returned a useless lens to Edmund Optics. I don't want to...
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LLightningInAJar 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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LLightningInAJar replied to the thread Undergrad How do I stretch a laser from a beam into a sheet?.So basically a handheld barcode scanner?