neilparker62's latest activity
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neilparker62 replied to the thread I Trigonometry problem of interest.or ##RL^2 = (2x)^2 - (2)^2 = 4x^2-4## We can also draw the other diagonal and apply Ptolemy directly: ##2x + 22x =... -
neilparker62 reacted to Charles Link's post in the thread I Trigonometry problem of interest with
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@neilparker62 My solution with your diagram is simple. Let RL=red line. Then ## (RL)^2=2^2+4x^2-2(2)(2x) \cos{\theta} ## and ##... -
neilparker62 replied to the thread I Trigonometry problem of interest.Thanks - just once though! Since one triangle is right, Pythagoras will there suffice. -
neilparker62 replied to the thread I Trigonometry problem of interest. -
neilparker62 replied to the thread Happy Pythagorean Day!.Diophantus Book II Problem VIII. To divide a square (of a rational number) into two other squares - also of rational numbers. Let the... -
neilparker62 reacted to difalcojr's post in the thread Thank you to mentors, advisors and members with
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I want to thank those members who interacted with me a couple of years ago in two Optics Forum threads. They were @Drakkith, @hutchphd... -
neilparker62 reacted to Haborix's post in the thread Announcement Please welcome berkeman as PF Admin with
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Congrats! Probably includes blood pressure medication! -
neilparker62 reacted to collinsmark's post in the thread Our Beautiful Universe - Photos and Videos with
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The Andromeda Galaxy (M31, NGC224), captured from my back patio, Nov-Dec., 2024. The Andromeda Galaxy is the closest galaxy* to our own... -
neilparker62 replied to the thread Announcement Please welcome berkeman as PF Admin.All the best - can scarcely even imagine what it takes to be a PF admin! -
neilparker62 reacted to elias001's post in the thread Announcement Please welcome berkeman as PF Admin with
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@berkeman is the American counterpart to @fresh_42's German equanimity and efficiency. -
neilparker62 reacted to berkeman's post in the thread Announcement Please welcome berkeman as PF Admin with
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LOL, is that what that is? I thought it was a paint roller, to symbolize the work to be done... :smile: -
neilparker62 reacted to Greg Bernhardt's post in the thread Announcement Please welcome berkeman as PF Admin with
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I am thrilled and honored to announce that @berkeman has accepted a role as PF Admin! @berkeman has 20 impactful years at PF under his...

