(1) Synchronous transmitter (2) Improved telephone

(3) Gramophone 4) Electric light - the messenger of light

(5) Copier

Quotes

01● Genius is 99% perspiration and 1% inspiration, but the 1% inspiration is worse than the 90% Nine’s sweat is even more important

02● The so-called genius is a lie, hard work is the real thing.

03●Invention is one percent cleverness and ninety-nine percent hard work.

04●Genius is one percent inspiration and ninety-nine percent perspiration.

05● Surprise (curiosity) is the seed of science.

06●If you want to succeed, perseverance should be your good friend.

07● Reading is to the spirit what exercise is to the body.

08● Love will not become indifferent because of reason, nor will it be lost because of ambition. It is the second life; it penetrates into the soul, warms every blood vessel, and beats in every pulse.

09● Friendship can enhance happiness and reduce pain.

10● I am never willing to give up my life of struggle. I attach great importance to the experience gained from struggle, especially the happiness gained after overcoming difficulties. A person must first go through difficulties and then step into good times. Only then do I feel useful and comfortable.

11● Life is too short, there are too many things to do, I have to race against time.

12● Life in this world is short, and our best reward for this short life is work.

13● The sense of honor is a good quality, so it can only be possessed by those who are noble and positive or well-educated.

14● Education is to the soul what carving is to marble.

15● There is nothing of real value in the world that can be obtained without hard work.

16●　Failure is also what I need, it is as valuable to me as success.

17● To climb high, one must have low self-esteem. Too high a self-esteem will not lead to success. Therefore, successful people must cultivate a calm attitude and focus on everything. This is the key to success.

19● Those who are not determined to cultivate thinking will lose the greatest joy in life.

20● There is no expedient that can avoid the real work of thinking.

21● If I have more or less inspired the efforts of some people, our work has more or less expanded the scope of human understanding, thereby adding a new dimension to the world. share happiness, then I will feel satisfied.

22● My philosophy of life is work. I want to reveal the mysteries of nature and benefit mankind.

23● Many people miss opportunities because opportunities are disguised as "hard work."

24● Most people lose their jobs because these jobs are disguised as "hard work."

25●When a person is young, if he does not think, he will achieve nothing.

26● Restlessness and dissatisfaction are the first necessities for progress.

27● Most of the inventions that come up in the minds of inventors are not practical. Only inventions that arise naturally from social needs are meaningful

28● Any problem can be solved There is no way to do anything that is impossible to think of. If you really get to the point where it is impossible to imagine, you can only blame yourself for being a fool and a lazy person.