Reddit Reddit reviews Ajax Scientific Concave/Convex Mirror, 75mm Diameter, 200mm Focal Length

We found 1 Reddit comments about Ajax Scientific Concave/Convex Mirror, 75mm Diameter, 200mm Focal Length. Here are the top ones, ranked by their Reddit score.

Industrial & Scientific
Science Education Supplies
Science Classroom Optics Kits
Ajax Scientific Concave/Convex Mirror, 75mm Diameter, 200mm Focal Length
Reversible concave and convex spherical mirror for demonstrating optical principles and effects for studentsOutward curved surface forms an image of the reflected object that is slightly distorted and smaller than actual sizeInward curved surface forms an image of the reflected object that is upside down when past the focal point and magnified and right-side up before the focal pointFocal length is 200mmMirror is 75mm in diameter
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1 Reddit comment about Ajax Scientific Concave/Convex Mirror, 75mm Diameter, 200mm Focal Length:

u/420theorist ยท 22 pointsr/trees

Ok man... here we go I got a plan for you. You should build a time machine and you could go into the future and spend that $50 on some trees when they were available...


The Plan



You need

  • 2718 x 72" Hex 303 Stainless Steel, Cold Finished, Annealed (Might just want to get an even 3000 for replacements and such)


  • 200m of high voltage, high temp copper cable, silicon coat is ideal


  • 7 x 5L Dewer Flasks with welded handles (And source of LN2)


  • 32 x Concave Mirrors


  • 32 x Optical Glass Lens Set, 50mm (Half Double Convex (20, 30, 50cm FL) and half Double Concave (20, 30, 50cm FL)


  • A well stocked home depot


  • An envelope


    The Time Machine



    Take the money you have NOW for the trees and place it in an envelope, and put the envelope somewhere safe. You will be taking this envelope into the future with you. Now, take all the other stuff and go build a time machine.


    One of the two things will happen


  • You fail to build the time machine, but when there are trees around and for sale you can go retrieve those $50 from the envelope and buy them. Who needs a time machine when you got green anyways??


  • You successfully build a time machine and become the first human to achieve time travel. Who needs trees when you a have a time machine???


    The way I see it, its a win win.