有史以来第一次:科学家使用激光冷却液体
时间：2019-01-12 作者：英语课 分类：2015年VOA慢速英语(十二)月
Lasers Used to Chill, Instead of Heat 有史以来第一次:科学家使用激光冷却液体
University of Washington researchers say they used a laser to turn hot water into cool water.
Five engineers from the university are the first in the 50-year history of the laser to refrigerate liquids under normal conditions with light beams.
The group used a simple approach to the experiment. Lasers are known for producing hot temperatures. The University of Washington says they “essentially ran the laser phenomenon in reverse.”
The discovery has a future in the computer and medical fields. Computer interiors could be cooled by lasers. In a medical laboratory, individual cells could be cooled to see how they react.
“Few people have thought about how they could use this technology to solve problems because using lasers to refrigerate liquids hasn’t been possible before,” said researcher Peter Pauzauskie.
The cool laser concept can also be used in manufacturing, telecommunications or national defense 1.
The group has an interest in hearing from businesses or scientists who may have every day applications for the cool laser.
The findings were published this month in the Proceedings 2 of the National Academy of Sciences.
Words in This Story
refrigerate – v. to keep something cold or keep it fresh
approach – n. a way of dealing 3 with something
reverse – adj. opposite to what is stated or considered normal
refrigerate – v. to keep something cold or keep it fresh
telecommunications – n. the technology of sending and receiving signals or images over long distances by telephone, television or satellite
defense – n. the things that are done by a country to protect itself from enemies
- The accused has the right to defense.被告人有权获得辩护。
- The war has impacted the area with military and defense workers.战争使那个地区挤满了军队和防御工程人员。
- He was released on bail pending committal proceedings. 他交保获释正在候审。
- to initiate legal proceedings against sb 对某人提起诉讼