Hackaday7 年
Retrotechtacular: The Best Pendulum Clock
Would you believe a pendulum ... clock yourself, or you already know about the Shortt Clock. Getting an electromechanical device to behave so well, ticking accurately to within 0.03 parts per ...
Hackaday13 年
Building An Electromagnetic Pendulum Clock
[Stephen Hobley] has been experimenting with an electromagnetic pendulum in order to build himself a clock. Through the course of his experiments, he has learned quite a bit about how pendulums ...
Mental Floss11 天
Why Is It Called a ‘Grandfather Clock’?
One that still manages to make an impression is the grandfather clock, a vertically imposing timekeeper that feels more like furniture. A pendulum marks time; the case, often ornate, serves as a ...
insider.si.edu6 个月
Foucault Pendulum
The Foucault pendulum which was displayed for many years in the Smithsonian's National Museum of American History was removed in late 1998 to make room for the Star-Spangled Banner Preservation ...
Psychology Today15 天
The Swinging Pendulum of Clock Changes
Much of that opinion came from worries that tinkering with time has detrimental effects on the body because it confuses the body clock's sensitivity to daylight and melatonin secretions.
insider.si.edu4 个月
Clocks and Watches
How have clocks and watches intertwined with our sense of time? When did they come to play central roles in our lives? To answer these questions, On Time from the National Museum of American History ...
The New York Times25 天
A Weekend Class on Clock Repair. Irish Scenery Included.
It was the first day of a weekend course on antique clock repair, taught by Nigel Barnes ... he moved on to discussing a clock’s parts: “One of the ground rules is when you take this clock ...
Lock Haven10 天Opinion
Antique coin banks can have unusual features, moving parts
Football fans might consider it a calamity if their favorite team loses. The calamity bank made by J. & E. Stevens in the ...
Nature1 年
The Molecular Clock and Estimating Species Divergence
What is the molecular clock? Levels of molecular variation could be used, in principle, to estimate divergence times, serving as evolutionary "clocks" that "tick" at different rates. Subsequent ...
Investopedia2 年
Credit Repair: What It Is, How It Works, Related Services
Credit repair is the process of fixing a credit history that has one of more problems, such as errors, identity theft, or actual delinquencies and similar issues. Credit repair is the process of ...
The New York Times5 年
The 33 Best Gifts for 1-Year-Olds
They’re also easy to push and can roll farther than you’d think. These little trucks have moveable parts (the tractor-trailer’s tailgate opens and closes), and they come in bright colors ...