bicyclewheel.info is an interactive app for designing and testing virtual bicycle wheels.
The bicycle wheel hasn't changed much since the 1870s. In my Ph.D. thesis, I explore some of the science that keeps this 140-year-old invention rolling.
Optical microscopy is limited by the wavelength of light. But today's nano devices have features under 10 nanometers, orders of magnitude smaller than the wavelength of visible light! Scanning probe microscopy breaks this limit by using specially fabricated nanoprobes which use mechanical forces to map out feature topography or other …