"It's important to find out if the cosmological constant is really constant," said Dr. Witten.
"The speed of light is really constant to a precision of one part in 1020," Brecher says.
To test whether Planck's constant is really constant, Makan Mohageg and graduate student James Kentosh of California State University in Northridge turned to the same GPS systems that help drivers find their way home.
The reason why Kentosh and Mohageg asked whether h is really constant, however, is not just because it is a central number for modern physics, but because h also appears in the expression for another fundamental constant, called the fine-structure constant.
It was really active with constant exchanges.
The constant was really zero for deep reasons that, when revealed, would lead physicists closer to an understanding of what they call "the vacuum," that is to say, the structure of reality.
I WAS really looking forward to giving up constant car pool duty, now that my older girls are off at college.
It's really about constant checks and balances.
"It's really that constant eyes and ears from an outside perspective that over time is what helps an agency," he said.
It was really really really good, something I really appreciated.
