Posts tagged science
Posts tagged science
Just how much data can we transfer using fibre optic cables?
Flettner’s spinning bodies were vertical cylinders; the basic idea was to use the Magnus effect. The idea worked, but the propulsion force generated was less than the motor would have generated if it had been connected to a standard marine propeller.
From Veritasium: What is Magnus force?
(source: Atlas Experiment)
See how the interplay of magnetic and electric forces can shrink a U.S. quarter to the size of a dime in a fraction of a second
"Your eye can’t tell the difference between that complex spectrum and one that is a mixture of pure blue and white,"
What’s next at LHC?
(Source: , via explore-blog)
(image from NY times)
The Rosetta Disk
Long Now Foundation’s Rosetta Project have created a miniature archive featuring all of the world languages laser etched onto a small disc that can fit in your hand:
The Rosetta Disk is intended to be a durable archive of human languages, as well as an aesthetic object that suggests a journey of the imagination across culture and history. We have attempted to create a unique physical artifact which evokes the great diversity of human experience as well as the incredible variety of symbolic systems we have constructed to understand and communicate that experience.
The Disk surface shown here, meant to be a guide to the contents, is etched with a central image of the earth and a message written in eight major world languages: “Languages of the World: This is an archive of over 1,500 human languages assembled in the year 02008 C.E. Magnify 1,000 times to find over 13,000 pages of language documentation.” The text begins at eye-readable scale and spirals down to nano-scale. This tapered ring of languages is intended to maximize the number of people that will be able to read something immediately upon picking up the Disk, as well as implying the directions for using it—‘get a magnifier and there is more.’
… The pages are microscopically etched and then electroformed in solid nickel, a process that raises the text very slightly - about 100 nanometers - off of the surface of the disk. Each page is only 400 microns across - about the width of 5 human hairs - and can be read through a microscope at 650X as clearly as you would from print in a book. Individual pages are visible at a much lower magnification of 100X. The outer ring of text reads “Languages of the World” in eight major world languages.
Here is a video by Scott Oller about the Rosetta Project:
You can find out more about the project here
So-called “fire rainbows” are neither on fire nor are they rainbows, but they sure are stunning.
They are technically known as iridescent clouds, a relatively rare phenomenon caused by clouds of water droplets of nearly uniform size.
Whatever they’re called, they’re gorgeous. Nature is stunning!
The Subatomic Jungle