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 ...
Nature2 年
Neutrality and Molecular Clocks
future studies should aim to reveal the variation of genomic neutral molecular clocks, to learn about genomic mutational landscapes. Such information is not only useful for understanding the raw ...
Hackaday15 年
Learn From The Ice Tube Clock
Looks like they’re at it again over at Adafruit. This time they’ve produced a clock that looks more like it should be attached to a munition rather than cruising bedside. But, geek-cred aside ...
来自MSN1 个月
Scared Of Numbers And Reading Clocks, You Could Have Dyscalculia
Do you often struggle with numbers or have a hard time reading the clock? Do people think you ... Well, you might have dyscalculia. It is a learning disorder that affects a person's ability ...
BBC3 个月
The 12 and 24 hour clock
A clock with hands (an analogue clock) shows us the numbers 1-12. There are 24 hours in one day, so we measure time by splitting the day into two halves. The first 12 hours of the day, from ...
BBC2 年
The 12 and 24 hour clock
A clock with hands (an analogue clock) shows us the numbers 1-12. There are 24 hours in one day, so we measure time by splitting the day into two halves. The first 12 hours of the day, from ...
Engineering360 News6 年
Network Clock Sources Information
Network clock sources are timing devices that use a signal from an atomic clock or other external reference source to set and maintain a central time for all of the elements in a network. They ...