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Black Holes: Gravitys Relentless Pull


When you open this site you may feel like you are a kid again, standing before a hands-on exhibit in a science center. After being reassured that black holes pose no threat to the Earth, you are presented with the opportunity to take a fearless "Journey to a Black Hole."

The graphics and animation are rudimentary, but the site is easy to navigate. You may quickly find yourself traveling to the spiral galaxy of Andromeda to orbit the massive black hole at its center--check out those traveling speeds!--or finding out what it would be like to fall into a black hole. Some surprising facts about black holes are presented throughout, as well as on a separate page in question and answer format.

If you are an accomplished astronomer, this site would not add anything to your knowledge, but if you are a young person interested in space or an adult who sees the term "black hole" in the news now and then and wants to know what that is all about, this site gives a quick tour.
permapage | score:9937 | -Daylily, March 13, 2013

The (Aviation) Magazine Collector


The Magazine Collector website is a communal effort as an online social community. Its web pages show a conscious effort to anticipate a target audience well beyond scarce or rare aviation magazine collectors. The Gallery page, for example, is open for posting photos of most anything with wings, from models (flying or static), to homebuilts, historical photos, etc. The same broad brushstroke holds true for the Resources page, where postings can range from sources such as magazine dealers, to information about aviation museums and libraries. read more...
permapage | score:9907 | -Glenn Shoup, March 31, 2011



For modern civilization stun gun is the best self defense & personal safety products for all. Million of police officers, solders civil people carry stun gun to protect against personal attack. Most crime gets as much publicity as the victim & other defense himself. Electroshock weapons such as stun gun, stun batons. Stun gun technology use temporary high voltage low current electrical discharge. It made via two metal probes connected via wires to the electroshock device. It common attacked area is upper shoulders, below the rib cage & the upper hip. It shocked half-second duration will cause pain & muscle contraction. Three seconds will often cause dazed & drop the ground. We advice that real self defense & personal safety for use this more details visits stun gun
permapage | score:9886 | -shoel, June 5, 2012

420 college live seminar


Marijuana has various superb benefits and it can be used for healing though there are not many people who are aware of this fact and I was also not too sure that if it really is true and how someone can get benefits from it. I went to 420 college live seminar to know that if it really is true or not and I was amazed to know that there are various top notch benefits which can be attained with marijuana. I was not even interested in starting my own business though after going though the complete 420 college live seminar, I decided that I should go for my own business because there were various superb tricks, tips and methods which were included in this particular seminar on how to start marijuana business. I am really happy to suggest others as well that 420 college live seminar really is very good indeed when it comes to start your own marijuana business. For more details visit: read more...
permapage | score:9882 | -Jacinda, April 14, 2012

Freegold Theory


A concise summary / explanation of 'Freegold' theory...
The problem is that there simply aren’t enough physical goods in the world to satisfy the demands of all the money and other paper wealth that exists. What would happen if everyone decided to get rid of money and other paper wealth and exchange it for cars, houses and other goods? There aren’t enough goods to satisfy all the money and paper wealth that exists. This means that much of the “wealth” represented by all this paper is non-existent. Plain and simple.

Hence the system is bound to collapse, because it is essentially a Ponzi scheme, and Ponzi schemes cannot last forever, because sooner or later an “investor” makes a claim that the Ponzi scheme cannot satisfy...
permapage | score:9882 | -Ray, March 25, 2010

Massive Global Warming Fraud Exposed at CRU


~168MB of data (~65MB compressed) of email, documents, and data from the Climate Research Unit's computers tell a sorry tale of collusion, fraud, and manipulated data. There are even comments in Fortran source code documenting logic that deals with modified data. The (allegedly) Russian hackers who liberated this information should be given a Nobel Peace prize as a 'global warming' offset to Al Gore's prize!
In the emails, these UN-funded scientists talk about deleting data under FOIA request, faking data for journals such as Nature, conspiring to keep opposing science out of peer-reviewed journals (which they controlled the editorial boards), using "tricks" to "hide the cooling [period]" etc.
permapage | score:9852 | -Ray, November 24, 2009

Online Slide Rule


If you've ever wondered how a slide rule works, here's the answer in an article that includes a virtual slide rule for your own operating pleasure...
Before electronic hand held calculators, the slide rule was widely used in Engineering, Science and Commerce for rapidly performing calculations involving multiplication and division which have to be accurate to not more than three or four decimal places. It can also be used for such operations as involution (raising to a power) and evolution (extraction of a root) and for calculations with trigonometric functions (sine, cosine, tangent, cotangent).
permapage | score:9832 | -Ray, September 29, 2007

Computer Science and Electronics Projects


Project Guidance contains a very good collection of electronics and computer science projects. You can post your comments about various projects there. Also you can submit your electronics or computer science project idea and get help from others. There are projects in bluetooth, RFID, GSM, Analog circuits, robotics, web applications etc. read more...
permapage | score:9825 | -Thin Master, June 22, 2007

Free Physics Textbook


Download this free, 1200 page physics textbook in pdf fomat...
How does a rainbow form? Is levitation possible? Do time machines exist? What does 'quantum' mean? What is the maximum force value found in nature? Is 'empty space' really empty? Is the universe a set? Which problems in physics are still unsolved?

This site publishes a free physics textbook that tells the story of how it became possible, after 2500 years of exploration, to answer such questions. The book is written to be entertaining, surprising and challenging on every page. With little mathematics, the text explores the most fascinating parts of mechanics, thermodynamics, special and general relativity, electrodynamics, quantum theory and modern attempts at unification. The essence of these fields is summarized in the most simple terms: it is shown how they are based on the notions of minimum entropy, maximum speed, maximum force, minimum change of charge and minimum action.
permapage | score:9819 | -Ray, December 16, 2005

Clusters and benchmarks on nanotechnologies dynamics


Phd's website on social and economic dynamics related to the world development of nanotechnologies.

This site proposes a whole set of tools and interactive content designed for a better understanding of the social and economic dynamics related to the world development of nanotechnologies . For this reason, it gives Feedback on some research work and presents a collection of documentary resources to which you are welcome to contribute. You will find there some public work and the main results of our research. read more...
permapage | score:9815 | -lionel, September 19, 2007

Goalfinder science animation view and download


Free science animation for download and paid subscription for in-depth and comprehensive learning on physics , chemistry, biology and technology for students, teachers and home schooling read more...
permapage | score:9812 | -phil morris, February 8, 2007

Spacefinder - Enhanced space pictures


Enhanced space pictures. A good look at some more detail. read more...
permapage | score:9810 | -spaceman2004, January 9, 2007

Nano Technology - A Tutorial


Nanotechnology deals with the study, development and practical application of structures and devices at molecular scale (between 1 and 100 nanometers, one nanometer is equivalent to 1 in 10-9 meters). "Nano" is a Greek prefix, which signifies a "billionth" (one billionth of a meter is the unit of measure in the field of nanotechnology). An atom is smaller than a nanometer, but a molecule can be larger.
A comprehensive tutorial on nanotech is available at

The contents of the tutorial are provided below:
  1. Nanotechnology - a definition

  2. Types of Nanotechnologies

  3. Microelectronic Transistors

  4. Nano FET

  5. Nano Electronics

  6. Microscopes

  7. Computation Nanotechnology

  8. Nanotechnology products

  9. Major achievements of Nanotechnology

  10. Some future Nanotechnology medical product ideas

  11. References
permapage | score:9806 | -Vijay, September 3, 2006

Electronic projects, kits, Microcontroller based


electronic projects for engineering /diploma final students with training with full guideline uptill viva.8051 based projects, pic projects, microcontroller based etc. You can get robotics , gsm, rfid, ir, telecommunication projects. read more...
permapage | score:9806 | -sunilromy, September 29, 2007

Astronomy: Pan across a deep sky galaxy field


Just drag the green circle anywhere in the field to see a close-up of that section of deep space.
The Ultra Deep Field obtained by the Hubble Space Telescope is the deepest view into the sky by humankind to date. This image combines 800 frames with a total exposure time of 1 million seconds. The 10.000 galaxies that are visible have distances out to times where the universe was just 800 million years old, one seventeenth of its current age. For more info check the UDF press release at
permapage | score:9796 | -Ray, December 20, 2005

Obscure Science Stories of 2005


From a controlling the speed of light to why spaghetti doesn't break into only two pieces to storing excess CO2 in the oceans, 2005 was a surprising year in science.
Buried land mines kill more than 15,000 people each year worldwide. At the current removal rate, it will take about 450 years to clear the world of undetected anti-personnel land mines. Now, researchers from several U.S. universities are training honey bees to locate buried land mines through odor detection.
permapage | score:9794 | -Ray, December 28, 2005
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