A 3D holographic display system made from scratch. The LEDs are controlled by a microcontroller, which receives power and commands via the slipring. A magnetic position sensor detects the ring to synchronize the rotational angle with lighting of LEDs.
Source: Research Experience in Education, Real Time Distributed Systems Lab, Texas A&M University
A right-angled spherical triangle.
arc AB + arc BC = arc AC
Source: Wikimedia Commons, File: Spherical triangle.svg
Even philosophers have the right to strike, but I fear it will not be very effective. (Yep, what a hard is the philosopher’s life!)
Source: Epistemology humor, Research Methods
“My mother made me a scientist without ever intending to. Every other Jewish mother in Brooklyn would ask her child after school, “So? Did you learn anything today?” But not my mother. “Izzy,” she would say, “did you ask a good question today?” That difference – asking good questions – made me become a scientist.”
Hyperbolic dodecahedral tiling.
Source: Visual Art, Xaq Pitkow, Brain and Cognitive Sciences, University of Rochester
Naive implementation of Fourier approximation of a grey-scale image.
Used image:
and displays side-by-side the grey-scale image and the associated graph of a function of 2 variables.
Source: MATLAB resources, Matthias Kawski, School of Mathematical & Statistical Sciences, Arizona State University.