Neil DeGrasse Tyson: Death by Black Hole Bio Neil deGrasse Tyson Neil deGrasse Tyson was born and raised in New York City where he was educated in the public schools clear through his graduation from the Bronx High School of Science. Tyson went on to earn his BA in Physics from Harvard and his PhD in Astrophysics from Columbia. Ryan Wyatt Ryan Wyatt assumed his role as Director of Morrison Planetarium and Science Visualization at the California Academy of Sciences (San Francisco) in April 2007. Wyatt’s professional interests include making research data sets accessible to the general public, and developing standards and “best practices” in the fulldome video community. Click on any word within the transcript to jump to that point in the program. next previous cancel To download this program become a Front Row member. ZOOM IN: Learn more with related books and additional materials. Encyclopædia Britannica Article black hole Cosmic body with gravity (see gravitation) so intense that nothing, not even light, can escape.
Cell Size and Scale Some cells are visible to the unaided eye The smallest objects that the unaided human eye can see are about 0.1 mm long. That means that under the right conditions, you might be able to see an ameoba proteus, a human egg, and a paramecium without using magnification. A magnifying glass can help you to see them more clearly, but they will still look tiny. Smaller cells are easily visible under a light microscope. To see anything smaller than 500 nm, you will need an electron microscope. Adenine The label on the nucleotide is not quite accurate. How can an X chromosome be nearly as big as the head of the sperm cell? No, this isn't a mistake. The X chromosome is shown here in a condensed state, as it would appear in a cell that's going through mitosis. A chromosome is made up of genetic material (one long piece of DNA) wrapped around structural support proteins (histones). Carbon The size of the carbon atom is based on its van der Waals radius.
Ep8 Part 1 Transcript Hi, I'm John Watt and welcome to Ever Wondered? This week, we’re taking a look at one of the biggest scientific challenges we’ve ever faced, climate change. It seems humanity has become a victim of its own success. Scientific advanced in medicine and technology have lead to an unprecedented quality of life, but also to huge rises in population and gas emissions. Many of these gases have heat absorbing properties, so as they increase within our atmosphere, so it seems does the temperature, just like in a greenhouse. But first I’m off to Wellington to meet a scientist who wanted to find out more about global warning. And so far we have a lot of air and over time when snow gets to ice, you make the little bubbles and these bubbles really contain the ancient atmosphere. Through ice cores, scientists have already charted greenhouse gas levels as far back as 800,000 years and shown that they’re now much higher than they have ever been. Moonboots. Good. Oh it’s cold as. Melt layers.
Explore, Play, Discover: Websites & Activities Search form Search Low-cost, teacher-tested activities for the classroom and the curious. Science of Cooking • Explore the science behind food and cooking with recipes, activities, and Webcasts.PreviousNext Explore, Play, Discover: Websites, Activities, and More Auroras: Paintings in the Sky Far north in the night sky, a faint glow appears on the horizon. Feeling Pressured Feel atmospheric pressure changes by stepping into a garbage bag. Camera Obscura Take the Beat Back Uncover the everyday origins of some extraordinary instruments. The Cold Water Candy Test Science of Baseball What's the science behind a home run? Arctic Seals These unique – and uniquely beautiful – seal species spend their lives amid the sea ice Plant Hybrids If you're a patient gardener, you can grow your own hybrid flowers. 2016 Total Solar Eclipse Telescope View Watch the telescope view of the entire 2016 total solar eclipse in Micronesia. Energy from Death Slinky in Hand Make waves without getting wet. Cheshire Cat Pages explore Connect
A Science Odyssey Access Instructions | Technical Notes and Help | Web Site Credits | D WGBH | PBS Online | Search | Printable Version | Feedback | Shop The Breakfast Challenge' Brain Teaser The Breakfast Challenge Science brain teasers require understanding of the physical or biological world and the laws that govern it. You are enjoying your breakfast after having put some salt on your scrambled eggs when your nerdy brother presents you with an ice cube floating in a glass of water and a short length of string. He challenges you to remove the ice cube from the glass using the string without tying any knots. Hint You can use other elements that are at your disposal besides the string.Hide Answer Take the string and soak it in the water. Back to Top