冷热错觉与运动感

旁白 neutral

I put my hands in the basins at the sides

我把双手放进两侧的盆里。

旁白 neutral

One of my hands is in the cold water; the other is in the warm water

我的一只手在冷水里，另一只在暖水里。

旁白 neutral

I keep them there for a time

我把它们在那儿放一会儿。

旁白 neutral

Now I am putting them together into the middle basin where the water is not cold and not warm

现在我把双手一起放进中间那盆——那水既不冷也不暖。

旁白 neutral

What is this?

这是怎么回事？

旁白 neutral

This water seems warm to one hand and it seems cold to the other!

这盆水对一只手觉得暖，对另一只手却觉得冷！

旁白 neutral

It is the same water

它是同一盆水。

旁白 neutral

But it seems cold and warm at the same time!

可它竟同时觉得又冷又暖！

旁白 neutral

Why is this?

这是为什么呢？

旁白 neutral

It is because one hand was in warm water and the other in cold water before I put them in this middle basin

因为在放进这中间盆之前，一只手曾在暖水里、另一只在冷水里。

旁白 neutral

Another sense is our sense of motion

另一种感觉是我们的运动感。

旁白 neutral

Here is a seat which goes round and round

这里有一张一圈一圈转的座位。

旁白 neutral

A man is in the seat

一个人坐在这座位上。

旁白 neutral

He is going round and round

他一圈一圈地转着。

旁白 neutral

At first he has a feeling that he is in motion

起初他觉得自己在动。

旁白 neutral

He has the feeling that he is going round

他觉得自己在转圈。

旁白 neutral

The seat, with the man in it, keeps on turning round at the same rate

座位连人一起，以同样的速率不停地转。

旁白 neutral

It does not go quicker. It does not go slower

它不会转得更快，也不会转得更慢。

旁白 neutral

After a time the man has a feeling that he is not in motion

过了一会儿，这人觉得自己没在动了。

旁白 neutral

But there is no change in the rate at which the seat is turning

可座位转动的速率一点没变。

旁白 neutral

It is going round the same number of times a minute

它每分钟转的圈数还是一样多。