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1 Primary & Middle School Mathematics1–9 年级在线 2 High School Mathematics10–12 年级在线 3 University Mathematics — Year 1本科一年级在线 4 University Mathematics — Year 2本科二年级在线 5 University Mathematics — Year 3本科三年级在线

1 Primary & Middle School Physics1–9 年级在线 2 High School Physics10–12 年级在线 3 University Physics — Year 1本科一年级在线 4 University Physics — Year 2本科二年级在线 5 University Physics — Year 3本科三年级在线

1 School Chemistry — Grades 1 to 121–12 年级在线 2 University Chemistry — Year 1本科一年级在线 3 University Chemistry — Year 2本科二年级在线 4 University Chemistry — Year 3本科三年级在线

1 Primary & Middle School Biology1–9 年级在线 2 High School Biology10–12 年级在线 3 University Biology — Year 1本科一年级在线 4 University Biology — Year 2本科二年级在线 5 University Biology — Year 3本科三年级在线

1 Primary & Middle School Earth and Space Sciences1–9 年级在线 2 High School Earth and Space Sciences10–12 年级在线 3 University Earth and Space Sciences — Year 1本科一年级在线 4 University Earth and Space Sciences — Year 2本科二年级在线 5 University Earth and Space Sciences — Year 3本科三年级在线

1 Markets I: The Ecosystem and Exchange-Traded Markets市场在线 2 Markets II: Rates, FX and Credit市场在线 3 Markets III: Commodities, Energy and Crypto市场在线 4 Quantitative Methods方法在线 5 Derivatives and Volatility衍生品在线 6 Rates, Credit, XVA and Risk利率、信用与风险在线 7 Research Craft: Predictors, Backtests, Measurement, Portfolios研究在线 8 Strategies I: Equities and Futures策略在线 9 Strategies II: Volatility, Relative Value, Macro and the Bank Desks策略在线 10 Microstructure and Execution交易执行在线 11 Market Making and High-Frequency Trading做市在线 12 Machine Learning for Markets机器学习在线 13 Low-Latency Software技术在线 14 Networks, Hardware and Trading Infrastructure技术在线 15 Research, Data and Risk Platforms技术在线 16 The Desk and the Firm公司运营在线 17 The Industry: Firms, Roles and Careers职业发展在线 18 Interviews I: Maths, Probability and Speed职业发展在线 19 Interviews II: Markets, Trading Games and the Final Round职业发展在线 20 Interviews III: Code职业发展在线

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Physics · 术语表

什么是 The five senses？

又称： sense · sight · hearing · touch · smell · taste

Definition 1.1 Primary & Middle School Physics · 第 1 章 — Observing the World: The Five Senses

A sense is a way the body finds out about the world. We have five:

sight — the eyes see light, colors and shapes;
hearing — the ears hear sounds;
touch — the skin feels rough or smooth, warm or cold;
smell — the nose smells the warm bread;
taste — the tongue tastes sweet, salty, sour.

The five senses: eye, ear, hand, nose, tongue — five doors between the world and you.

One apple for all five senses: the eyes see its red, the hand feels its smooth skin, the ears heard the crunch of the missing bite, the nose smells its perfume, the tongue keeps the taste.

示例

Example 1.2 (One apple, five senses)

Eating an apple uses every sense: you see its red skin, you feel it smooth and round in your hand, you hear the crunch, you smell its perfume, you taste its sweet juice. Five senses, one apple.

Example 1.3 (Try it: the sound walk)

Sit still, close your eyes, and count the sounds around you for a little while: a car, a voice, the wind, your own breathing. With eyes closed, the ears notice sounds that the busy eyes made you miss. Most people find $4$ or $5$ sounds they had not noticed before.

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