Imagining the Tenth Dimension wiseGEEK: clear answers for common questions Cosmology Books and Links Note: Except for the removal of dead links, this site has not really been updated since the author retired in 2009. Some Good Books The Once and Future Cosmos (Scientific American, 2002). A reprint of the Sept. 2002 issue of Scientific American . Adams, Fred & Greg Laughlin, The Five Ages of the Universe (Free Press, Simon & Schuster, 1999). Croswell, Ken, The Universe at Midnight: Observations Illuminating the Cosmos ( Free Press, 2001). Duncan, Todd & Craig Tyler, Your Cosmic Context (Pearson Addison Wesley, San Francisco, 2009). Ferris, Timothy, The Whole Shebang: A State-of-the-Universe(s) Report (Simon & Schuster, New York, 1997). Freeman, Ken & Geoff McNamara, In Search of Dark Matter (Springer/Praxis, 2006). Freedman, W.L., ed., Carnegie Observatories Astrophysics Series, Vol. 2: Measuring and Modeling the Universe (Cambridge Univ. Goldsmith, Donald, Einstein‘s Greatest Blunder? Greene, Brian, The Fabric of the Cosmos: Space, Time, and the Texture of Reality (Knopf, NY, 2004).
13-alternative-search-engines-that-find-what-google-cant Advertisement R.I.P Google. What would be your first reaction if you saw this? Well, no one is chipping on that digital tombstone yet. But it does not mean that there is no grass outside that fence. These Search Engines Do What Google (Still) Can’t Some are worthy contenders for the second-place medallion while some are just go into those niche corners of the web. 1. Google does good for the world in its own way. Read through their FAQ where they open up about the project and also show you the progress of their planting programs. 2. Open your bag of privacy tools to add Qwant to the collection of no-tracking search engines. Even when you are connected with an ID, we don’t use any cookie nor any other tracking device when you browse the site. Local storage on your machine is used to save your settings and data. 3. Any search engine that does not store user data is always worth a try. Click the hamburger icon on the top right to tweak the settings. 4. 5. 6. Let’s talk about kids. 7. 8. 10.
astrobites | the astro-ph reader's digest Have A Good Idea? Global Ideas Bank Is Waiting For You - Robin Good's Latest News Orders of magnitude (radiation) The following table includes some dosages for comparison purposes, using millisieverts (mSv) (one thousandth of a sievert). The concept of radiation hormesis is relevant to this table – radiation hormesis is a hypothesis stating that the effects of a given acute dose may differ from the effects of an equal fractionated dose. Thus 100 mSv is considered twice in the table below – once as received over a 5-year period, and once as an acute dose, received over a short period of time, with differing predicted effects. The table describes doses and their official limits, rather than effects. Comparison of Radiation Doses - includes the amount detected on the trip from Earth to Mars by the RAD on the MSL (2011 - 2013).[16][17][18][19]
50 Online Applications and Sites to Consider | chrisbrogan.com For those of you already pretty much deep into social media applications, skip ahead and blaze through the list. If I’ve found five sites/applications that you haven’t seen or considered, leave a comment and give me a point. For the rest of you, here’s a list I put together the other day when thinking about just how much of my computer use is spent online and attached to the web. Some of the applications I point out aren’t things I use currently, but I have used them, and/or have an account there. For those of you who are getting involved in social media a little bit at a time, consider this a list of things you might check out a little bit at a time to see what appeals, what fits into your workflow, and what you can dismiss as unnecessary for your needs. AND, if you have some resources you think would be good to add to the list, feel free to add them in the comments section. 50 Online Applications and Sites to Consider Blogging Blogger – free blogging and hosting. Photo credit, klynsis