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Physics
A Slower Speed of Light | MIT Game Lab
A Slower Speed of Light is a first-person game prototype in which players navigate a 3D space while picking up orbs that reduce the speed of light in increments. Custom-built, open-source relativistic graphics code allows the speed of light in the game to approach the player’s own maximum walking speed. Visual effects of special relativity gradually become apparent to the player, increasing the challenge of gameplay. These effects, rendered in realtime to vertex accuracy, include the Doppler effect (red- and blue-shifting of visible light, and the shifting of infrared and ultraviolet light into the visible spectrum); the searchlight effect (increased brightness in the direction of travel); time dilation (differences in the perceived passage of time from the player and the outside world); Lorentz transformation (warping of space at near-light speeds); and the runtime effect (the ability to see objects as they were in the past, due to the travel time of light).
In the latest poll of our Science fiction, science fact project you told us that you wanted to know what time is. Here is an answer, based on an interview with Paul Davies , a theoretical physicist and cosmologist at Arizona State University and Director of BEYOND: Centre for Fundamental Concepts in Science . Click here to see other articles on time and here to listen to our interview with Davies as a podcast. What is time? Everyone knows what time is. We can practically feel it ticking away, marching on in the same direction with horrifying regularity.
What is time?
Thoughts
A Holiday Message from Ricky Gervais: Why I'm An Atheist
By Ricky Gervais Ricky Gervais Ricky Gervais is the writer and star of HBO’s “Ricky Gervais Out of England 2: The Stand-Up Special.” To go to his website click here . Why don’t you believe in God?
Music
Did I disappoint you or let you down? Should I be feeling guilty or let the judges frown? 'Cause I saw the end before we'd begun, Yes I saw you were blinded and I knew I had won. So I took what's mine by eternal right. Took your soul out into the night.
JAMES BLUNT- Goodbye My Lover
I heard that you're settled down That you found a girl and you're married now. I heard that your dreams came true. Guess she gave you things I didn't give to you.
ADELE LYRICS - Someone Like You
Productivity
Getting Things Done
Getting Things Done , cuyas siglas son GTD , es un método de gestión de las actividades y el título de un libro de David Allen , libro que en español se ha editado con el título Organízate con eficacia por el sello Empresa Activa, de la editorial barcelonesa Ediciones Urano . GTD se basa en el principio de que una persona necesita borrar de su mente todas las tareas que tiene pendientes guardándolas en un lugar específico. De este modo, se libera a la mente del trabajo de recordar todo lo que hay que hacer, y se puede concentrar en la efectiva realización de aquellas tareas. [ editar ] Sobre qué trata GTD A diferencia de otros expertos en gestión del tiempo , Allen no se centra en el establecimiento de prioridades. En su lugar, él insta a la creación de listas de tareas específicas para cada contexto, por ejemplo, una lista de llamadas telefónicas pendientes o recados que hacer en la ciudad.
Definition of project (GTD)
“If you don’t have a clear sense of the totality of your obligations, you will always overcommit. And commitments occur on multiple levels, from ‘why I’m on the planet’ to ‘need butter.’ But the elevation most amorphous for most is the plane just above your physical activities—your projects. I have a radical definition of a project: Anything you’re committed to finish within a year that requires more than one action to complete it. Given that broad designation, most people have between 30 and 100. Where’s your list?Hi Folks, I know many people are looking for the magic bullet or software tool which will tell them what to do, but I've never found anything more powerful and trustworthy than my own gut. My system presents me with a full array of choices, but no systematic formula will ever be as reliable as my own internal barometer.
About setting priorities
Some projects can be a real pain in the you know what . Not all of them, of course. But there are some that just keep us awake at night. There can be many reasons of such a situation. Sometimes the tasks that need to be done are simply difficult to perform.
How to Keep Your Projects from Killing You
Sounds serious, doesn’t it? Thankfully, the whole idea turns out to be quite easy to grasp. But first… At this point you already know what the main elements of productivity are and where to start with GTD . This is all great, but we’re still lacking one important piece of information…
The Key to GTD
The 7 Main Elements of GTD
Just like the five elements (Fire, Earth, Metal, Water and Wood), GTD has its own elements. Only there are seven instead of five…and not nearly as epic. In the previous parts of this series we were talking about things like how to select what to do next, and how to compile your projects list (and your next tasks list). Today it’s time to get deeper into this topic, and explain the main elements a little more in detail. Not to keep you hanging any longer…let me tell you what the seven main elements of GTD are: Projects List Next Tasks List Future/maybe List Calendar “Waiting for” List Resource Files The Intangible One (wait for it…)post written by: Marc Email “Absorb what is useful, reject what is useless, add what is specifically your own.” – Bruce Lee Being highly productive is not an innate talent; it’s simply a matter of organizing your life so that you can efficiently get the right things done.
12 Things Highly Productive People Do Differently
Maths
January 1999 What is proof? Philosophers have argued for centuries about the answer to this question, and how (and if!) things can be proven; no doubt they will continue to do so!
The origins of proof
September 1999 In the Millennia since Euclid, people's conceptions of mathematical proof have been revolutionised. From the discovery of Calculus and the rise of abstract mathematics, to Gödel's amazing discovery. There have been many changes and a few surprises along the way.
The origins of proof III: Proof and puzzles through the ages
Hilbert's axioms
Hilbert's axioms are a set of 20 (originally 21) assumptions proposed by David Hilbert in 1899 in his book Grundlagen der Geometrie (tr. The Foundations of Geometry ) as the foundation for a modern treatment of Euclidean geometry . Other well-known modern axiomatizations of Euclidean geometry are those of Alfred Tarski and of George Birkhoff .Type of proof
Games