多级标题：
私. 導入
Ⅱ. The concept of wavelength
Ⅲ. The visible spectrum
A. Definition
B. Colors in the visible spectrum
Ⅳ. Determining the longest wavelength visible to the human eye
V. 結論
私. 導入
– Briefly introduce the topic of calculating the longest wavelength visible to the human eye.
– Explain the importance of understanding the visible spectrum and how it relates to our perception of color.
Ⅱ. The concept of wavelength
– Define wavelength as the distance between two corresponding points on a wave.
– Discuss how wavelength is measured in various units, such as meters or nanometers.
– Explain the relationship between wavelength and the color of light.
Ⅲ. The visible spectrum
A. Definition
– Define the visible spectrum as the range of wavelengths that can be detected by the human eye.
– Explain that the visible spectrum represents only a small portion of the entire electromagnetic spectrum.
B. Colors in the visible spectrum
– Describe how different wavelengths in the visible spectrum correspond to different colors.
– Mention the order of colors in the visible spectrum: red, orange, yellow, green, blue, indigo, and violet.
– Explain that each color has a specific range of wavelengths associated with it.
Ⅳ. Determining the longest wavelength visible to the human eye
– Discuss how the human eye perceives light and how it detects different wavelengths.
– Explain that the longest wavelength visible to the human eye is at the red end of the visible spectrum, specifically around 700 nanometers.
– Mention that wavelengths longer than 700 nanometers are not detectable by the human eye and are considered infrared radiation.
V. 結論
– Recap the main points discussed in the article.
– Emphasize the significance of understanding the longest wavelength visible to the human eye in the context of color perception.
– Conclude by highlighting the importance of further research in the field of human vision and the visible spectrum.
