Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still daring to test it. Some theories of quantum gravity suggest light might ...
Researchers at Columbia have created a chip that turns a single laser into a “frequency comb,” producing dozens of powerful light channels at once. Using a special locking mechanism to clean messy ...
“Our participants created a complete lighting survey for public spaces with a total surface area of about 22 square kilometers,” Kyba says proudly. After co-developing the “Nachtlichter” app ...
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