It features over a hundred
mirror cells and interactive exhibits that bring to the fore the science and mechanics behind optical illusions, all while following a compelling storyline.
Both Mama and Papa have conventional
mirror cells with three large knurled collimation knobs and three narrower but longer locking knobs.
They also showed that specific subsets of
mirror cells increased their activity during the execution of an action but decreased their activity when an action was only being observed.
These neurons and another group located elsewhere in the premotor cortex have been dubbed
mirror cells.
For example, if you see someone showing disgust,
mirror cells in your own "disgust" brain module are activated, giving you a faint feeling of disgust yourself.
Other clever ATMs will find even more ingenious ways to utilize these concepts to create new
mirror cells.
Buying a ready-made mirror and other components (focuser,
mirror cells, tube, etc.) will smooth the bumps on the way up the learning curve.
Chris's scope neatly avoids the need for awkward front-end adjustable
mirror cells found in the collimation systems of other ball-and-socket designs.
Toshimi Taki wrote Plate, the first FEA program for analyzing amateur-made
mirror cells (S&T: September 1994, page 84, and April 1996, page 75).
Made with resilient, air-cushioned foam, it provides a simple alternative to the hardware used in conventional
mirror cells.
Most
mirror cells have three adjustment screws or three pairs of push-pull adjustments.
Howard's Standard Handbook for Telescope Making and is one of a family of "double plate"
mirror cells. The main components are two disks of plywood separated by a center pivot.