In a physics knowledge contest class, the teacher said: "What is lacking in today's society is not knowledge-based talents, but innovative talents.

1. The balance is too ugly.

There's nothing we can do. Why don't we get some designers to do something?

2. The measurement is influenced by the external environment (air buoyancy, pressure ...)

_ _ _ The trays on both sides of the balance are made into vacuum (including the automatic evacuation of air after the items are put away).

3. The manual reading error is too large

It is best to change the reading to electronic, and the error can not be eliminated but can be reduced.

4. The weight is good to wear.

-Use different materials as weights.

5. troublesome operation

-What age is it now? We also need children to add and subtract weights bit by bit, to dial the rusty roaming code around us, and then to read such an inaccurate and accurate data.

It's better to change it to automatic balance (but this will have to wait)

6.………

There's so much to talk about. .........

The significance of the existence of balance:

1. Add more points to the test paper.

Operation, experiment ... this is the content of the exam. Dare you not learn?

2. It is still useful in life.

(Chinese medicine shop, laboratory, rookie cooking for the first time ...)

You can show profound knowledge.

Look, I can play with scales, can you? Only show off to curious children below primary school education, but don't mislead others.

4. Recall the former great scientists.

People have achieved so much with or without scales, but now we have both computers and scales. Why haven't we developed the opposite theory? Worship is beyond words. ...

If the above remarks are similar, it is purely coincidental, and I have the final right to interpret them.

anxious ...............