Recent content by Physiogista

I have read that freeze drying is the best way to salvage wet books (http://www.ccaha.org/uploads/media_items/technical-bulletin-salvaging-books.original.pdf). However, freeze dryers run in the thousands of dollars, and I don't know anyone who has one I can borrow. Solution: make my own! I...

Will do, thanks.

I have also read that freeze drying is the best way to salvage wet books. I am in that current predicament! I have found some instructions on creating a vacuum system (http://www.tk560.com/phpBB2/viewtopic.php?t=424), but what I can't seem to figure out are the qualifications for the vacuum...

Thank you all!

I am volunteering at an orphanage in Guatemala. There is no well, and the city water is a relatively expensive. I would like to install a rain catchment system on our roof for use in the outhouse bathroom and garden. I've diagrammed it and attached the image. My question is this: Will the...

Per the forum rules, I am introducing myself here as my first post. I love physics! I didn't participate in online forums much while in school, but wish I had. I didn't really know they existed to the extent that they do. I have a lot of catching up to do.