Cellestial Globe at The Franklin Institute. Long before there were planetariums or advanced technologies available for studying the sky, people devised ways of depicting the sun, moon, planets, and stars in relation to the Earth.
There was a desire to learn about astronomical history and events; people wanted to figure out how Earth fit into the grand scheme of the universe. Globes helped to put objects into perspective, and served as scientific instruments, ornamental showpieces, and physical illustrations of the astronomy beliefs of the day. Globes have been visual representations of the physical characteristics of Earth and Sky for thousands of years. Generally, there are three types of globes.
Terrestrial globes detail geographical features of the Earth. Is there any material that can block a magnetic force? Specifically does lead block magnetic fields? Question Is there any material that can block a magnetic force?
Specifically does lead block magnetic fields? Asked by: Dustin Answer Magnetic fields (forces are caused by magnetic fields) cannot be blocked, no. It IS Rocket Science. - StumbleUpon. Top 10 Things You Did or Didn’t Know About Acetone. The majority of people know acetone only as it relates to removing nailpolish.
Organic chemists like myself, on the other hand, would have a lot of trouble imagining life without acetone. Chemistry of Morphine, Heroin, and Lemon Poppy Seed Cake. You’ve heard the warnings – don’t eat poppy seeds before taking a drug test.
The seeds can trigger a false positive reading for opioids, making your potential employer think you could be a heroin addict. A few years back, Mythbusters reproduced the anecdotes, showing that just two poppy seed bagels was enough to make Jamie test positive for drugs. (Other studies have shown the same thing.)
10 Futuristic Materials. Lifeboat Foundation Safeguarding Humanity Skip to content Switch to White Special Report.
Ionic bonding - Chemistry for Kids! The Basics of Reading Music - By Kevin Meixner. Introduction To better understand how to read music, maybe it is best to first ask ourselves: What is music exactly?
Periodic table T-shirts > Main shop menu > WebElements Ltd. Skywatcher's Pronunciation Guide. Food for Tomorrow. By 1941 Russian botanist Nikolai Vavilov had created the largest seed bank in the world, a collection of 400,000 seeds, roots, and fruits whose genetic material held the future of Soviet agriculture.
10 Strange Things About The Universe. Space The universe can be a very strange place.
While groundbreaking ideas such as quantum theory, relativity and even the Earth going around the Sun might be commonly accepted now, science still continues to show that the universe contains things you might find it difficult to believe, and even more difficult to get your head around. Theoretically, the lowest temperature that can be achieved is absolute zero, exactly ? 273.15°C, where the motion of all particles stops completely. However, you can never actually cool something to this temperature because, in quantum mechanics, every particle has a minimum energy, called “zero-point energy,” which you cannot get below. One of the properties of a negative-energy vacuum is that light actually travels faster in it than it does in a normal vacuum, something that may one day allow people to travel faster than the speed of light in a kind of negative-energy vacuum bubble.
Lesson Plan for Making a Speaker Laboratory. ©1995 The Regents of the University of California by Regan Lum Introduction:
Historical Anatomies on the Web: William Cheselden Home. Elements & Periodic Table: Metals. We wanted to give you a big overview of metals before we get into details about specific families.
Almost 75% of all elements are classified as metals. They are not all like silver (Ag), gold (Au), or platinum (Pt). Those are the very cool and shiny ones. There are other metals like potassium (K) and iridium (Ir) that you might not think about right away. Copenhagen wheel project. Unkown facts about Nikola Tesla and Thomas Edison.
Www.crazyasabagofhammers.com. Simple animation to explain complex principles. 1, aircraft radial engine 2, oval Regulation 3, sewing machines 4, Malta Cross movement - second hand movement used to control the clock. Relativistic Baseball.
What would happen if you tried to hit a baseball pitched at 90% the speed of light? Online converter. National Science Foundation (NSF) Discoveries - Video Game Technology and Science? DiscoveryVideo Game Technology and Science? Chemists use the computer technology behind today’s video games to rapidly calculate the structure of molecules July 15, 2009 Researchers who design and simulate molecules are facing a technological traffic jam. The bottleneck is caused by the amount of time--ranging from days to years--a computer needs to run complex mathematical equations, or algorithms, used by scientists and engineers to develop more effective drugs, catalysts for fuel cells and other molecular-based materials and applications.
Todd Martínez, a professor of chemistry at Stanford University, may just have the answer for breaking up this computational log jam. In the March 2009, online issue of the Journal of Chemical Theory and Computation, Martínez and graduate student Ivan S. The revamped algorithms calculated the structures of test molecules up to 650 times faster than the molecular design program called GAMESS running on a computer's CPU (see top image). Thom H.