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Hi, I'm a self-confessed newb, and am hoping to get some guidance from the much-more-experienced folks in the forum, so that a science project I'm looking to perform ends up being a) viable, and b) as safe as possible. Thanks in advance for any guidance or suggestions. There are 2...

Hi, Alaskan and Pi-R2 - just a quick note to say _thanks_ so much for the outstanding advice. Alaskan, it was great to get the detail in your post - invaluable, as I've mentioned previously, for a newb like myself. A quick question - do you have a suggestion for either where to buy, or what...

Pi-r2: Wonderful info. Many many thanks! Yes, good guesswork - am in the US; Seattle to be specific. And right, by 'inexpensive' I am hoping for something less than $250-ish, total. By the way, the inspiration for the project comes from the story of finding Lunokhod, the '60's-era Soviet...

Hi, I'm a complete and utter newb at laser pointers - but, scientifically inclined and an engineer by training. I'm hoping for a recommendation for an inexpensive consumer laser pointer with the lowest divergence that's reasonably possible. The application is for a science project for my...