【英语时差8,16】斜坡物理学（下）

Okay, so why not do what Galileo did when he first demonstrated this fact? Use a ramp¹ instead of a building. Start your bowling² ball and your golf ball at the same spot on the ramp and let go at the same time. If our intuitive sense of this situation is right, and heavier things fall faster than lighter³ ones, then they should also roll faster. Putting them on a ramp only slows things down so it’s easier to watch. Try this yourself, however, and you will see that the two roll at exactly the same rate. That is, both will roll faster and faster as they proceed down the ramp, but they will keep pace with each other and hit bottom at the same moment. Congratulations! You have demonstrated that all things fall at the same rate.Okay, so why not do what Galileo did when he first demonstrated this fact? Use a ramp instead of a building. Start your bowling ball and your golf ball at the same spot on the ramp and let go at the same time. If our intuitive sense of this situation is right, and heavier things fall faster than lighter ones, then they should also roll faster. Putting them on a ramp only slows things down so it’s easier to watch. Try this yourself, however, and you will see that the two roll at exactly the same rate. That is, both will roll faster and faster as they proceed down the ramp, but they will keep pace with each other and hit bottom at the same moment. Congratulations! You have demonstrated that all things fall at the same rate.

1 ramp   

n.暴怒，斜坡，坡道；vi.作恐吓姿势，暴怒，加速；vt.加速

参考例句：

• That driver drove the car up the ramp.那司机将车开上了斜坡。
• The factory don't have that capacity to ramp up.这家工厂没有能力加速生产。

2 bowling   

n.保龄球运动

参考例句：

• Bowling is a popular sport with young and old.保龄球是老少都爱的运动。
• Which sport do you 1ike most,golf or bowling?你最喜欢什么运动，高尔夫还是保龄球？

3 lighter   

n.打火机，点火器；驳船；v.用驳船运送；light的比较级

参考例句：

• The portrait was touched up so as to make it lighter.这张画经过润色，色调明朗了一些。
• The lighter works off the car battery.引燃器利用汽车蓄电池打火。