Parallax Measurement
Submitted by MPE 2013 on
An introduction to parallax measurement
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SURFER – Some Ideas for the Classroom
Submitted by IMAGINARY on
Some ideas how to use SURFER at school
Resolution of Singularities
Submitted by IMAGINARY on
A short introduction to singularity theory for everybody - without equations.
Solid Möbius Strips as Algebraic Surfaces
Submitted by Stephan Klaus on
How to make a Möbius strip with SURFER.
Glances at Infinity
Submitted by IMAGINARY on
Survey article on symmetries and chaos
Solid Trefoil Knot as an Algebraic Surface
Submitted by Stephan Klaus on
How to make the trefoil knot with SURFER
World record surfaces
Submitted by IMAGINARY on
Introduction to surfaces with many singularities
Coriolis force
Submitted by Michel Darche on
Have you already tried to reach a target when you are moving to the right? You need to aim at the left of the target if you wish to reach it. Same thing if the target is moving slower than you. Your target seems to be deviated by a fictitious force, the Coriolis force. It is the French mathematician G. G. de Coriolis (1792-1843) who was the first to explain the influence of the Earth rotation on the winds and marine streams. He did so through theoretical work on composed centrifugal forces.
Solitons and Tsunamis
Submitted by Michel Darche on
Solitons are solitary waves observed for the first time by the Scottish mathematician and engineer J. S. Russell in 1834. Solitons travel very long distances at a constant speed without loss of energy. Their speed is proportional to the square root of the deepness of the channel.
Where are you?
Submitted by Michel Darche on
How many satellites orbiting around the Earth are needed to compute exactly one’s position at each instant?
The GPS system uses a set of satellites (at least 24) orbiting around the Earth and emitting signals.
An ideal GPS receiver measures the travel time of three signals from emitted by three satellites to the receiver. From each measure it computes its distance to each satellite.