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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 Color as a perception？

又称： metamer

Definition 11.2 High School Physics · 第 11 章 — Color and Light Sources

Color is therefore a perception, not a property of light alone: a spectrum specifies an intensity at every wavelength, the eye keeps three numbers. Lights with different spectra but the same three cone responses look strictly the same: they are metamers.

示例

Example 11.3 (Two yellows)

The $589\,\mathrm{nm}$ line of a sodium lamp excites the red and green cones almost equally: the brain says yellow. A screen lighting its red ( $610\,\mathrm{nm}$ ) and green ( $540\,\mathrm{nm}$ ) subpixels gives the same yellow with no light near $589\,\mathrm{nm}$ . A prism separates the two instantly; the eye never can.

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