Earth - Your life on earth Explore BBC Earth's unique interactive, personalised just to you. Find out how, since the date of your birth, your life has progressed; including how many times your heart has beaten, and how far you have travelled through space. Investigate how the world around you has changed since you've been alive; from the amount the sea has risen, and the tectonic plates have moved, to the number of earthquakes and volcanoes that have erupted.
The Nautilus shell spiral as a golden spiral Nautilus shell spirals may have phi proportions, but not as you may have heard. The Nautilus shell if often associated with the golden ratio. There is a fair amount of confusion, misinformation and controversy though over whether the graceful spiral curve of the nautilus shell is based on this golden proportion. Some say yes, but offer no proof at all. Trigonometry - Eratosthenes & Ptolemy Eratosthenes ≈ 200 BC, the size of the earth Eratosthenes was librarian at the Royal Library of Alexandria. He read in a book that every summer solstice at noon, the water deep down in a well in Syene was all illuminated by the sun.
If the Moon Were Only 1 Pixel - A tediously accurate map of the solar system Mercury Venus Earth You Are Here Moon 5 Must-Have Tools for a Killer Presentation A presentation is one of the best ways to convey ideas, especially for visual learners and thinkers. While many of us grew up creating class presentations with Microsoft heavyweight PowerPoint, sometimes you want to illustrate your ideas with a little more flair. Below, we present to you five sweet digital alternatives to PowerPoint for when you need more than just static words on a screen. From cloud-based apps to websites that reinvent the slideshow, you'll find something to wow everyone from small classrooms to packed auditoriums.
Trigonometry - Heliocentrism and Geocentrism Timeline ≈ 350 BC, Aristotle Aristotle, a pupil of Plato, becomes the tutor of Alexander the Great. Aristotle's views of the world shape science for centuries. There Is No Time. There Never Was and There Never Will Be By: Josh Richardson, Prevent Disease Everything exists in the present moment and it’s a fundamental principle of the Universe that many of our scientists are still trying to grasp. Time does not actually exist and Quantum Theory proves it.
How To Rank on Google's First Page for Free Edit: A Lot of Information in This Post Is Outdated. The question of ranking high on Google search and other search engines is probably the most asked question when it comes to internet marketing or simple website development. Back in 2008 I wrote a post on this blog; Dominate Google’s First Page for Free and although it got a lot of interest and 50 or so comments, the Internet has evolved a lot in the past 3 years and I feel it’s about time I updated the post with the new and the fresh. I am still an active member at The Wealthy Affiliate and many other Internet Marketing communities, I am growing my online business every day so I stay updated on what works and what doesn’t. Check Out the FREE Course And Start Building Your Success Online! So… Google has been playing a lot with page rankings and its search algorithm.
Hundreds of billions of stars are strewn like fairy lights in the dark cosmic ocean of the universe. Until 25 years ago, our observations of the beauty and destruction of the cosmos was obscured by Earth’s atmosphere—the Hubble Space Telescope has liberated astronomers from earth-bound worries like atmospheric turbulence. As unassuming as the Hubble may look compared to the vastness of space, the telescope is actually the length of a large school bus, weighs as much as two elephants, and travels around Earth at 5 miles per second. Cell nucleus HeLa cells stained for the cell nucleus DNA with the BlueHoechst dye. The central and rightmost cell are in interphase, thus their entire nuclei are labeled. On the left, a cell is going through mitosis and its DNA has condensed. Because the nuclear membrane is impermeable to large molecules, nuclear pores are required that regulate nuclear transport of molecules across the envelope.
Seeing Theory Seeing Theory is a project designed and created by Daniel Kunin with support from Brown University's Royce Fellowship Program. The goal of the project is to make statistics more accessible to a wider range of students through interactive visualizations. Statistics is quickly becoming the most important and multi-disciplinary field of mathematics. Memories of Kurt Gödel [This memoir essay appeared in the magazine Science 82 in April 1982, and in my 1982 book Infinity and the Mind. It’s based on the “Conversations With Godel” documented in my previous post. Some of the photos are from a recent trip through the West, others from the 1970s.] [This is a cropped version of a photo by Arnold Newman.] I didn’t know where his real office door was, so I went around to knock on the outside door instead.