Physicists can use bright, hot lasers to slow atoms down so much that they measure -459 degrees Fahrenheit.
Researchers have made some of the most accurate clocks imaginable in recent years, but the trick is harnessing those clocks to electronics. Using lasers to tune microwaves bridges the gap.
A botched beauty procedure can be more than just unsightly – it can be dangerous. Here are some things to keep in mind when seeking a skin treatment.
Most people are familiar with lasers. But what about a laser made with sound rather than light? A couple of physicists have now created one that they plan to use for measuring imperceivable forces.