In addition to this , the shape of the focus being about a millimetre long and just a hundredth of a millimetre wide means that any atoms undergoing spontaneous emission tend to stimulate emission in other excited atoms either in the forward or backward directions , rather than at some arbitrary angle to the beam .
For perhaps the hundredth time , I try to think like einstein .
可能这是我第一百次,想要像爱因斯坦一样思考。
Remember , it may be the hundredth time you 've heard it , but it is all new to your audience .
记住,对你而言这可能是第一百次听到这些信息,但是对你的观众来说这是全新的。
They are gathered up and injected into the quantum experiment at speeds of around five meters per second - just a hundredth the speed of the molecules flying around in the air .
它们被聚集起来投入实验,此时速度大约是5米每秒仅为空气中分子自由碰撞速度的百分之一。
Its precious pigeon cargo would return to the city bearing messages by the thousand , all photographed using the brand-new technique of microfilming and printed on slivers of collodium , each weighing just a hundredth of an ounce .