Blackbody Radiation Question 2: Planck's Law Approximates Rayleigh-Jeans Law at Large Wavelengths

In this video I show that using just the first term for the Taylor series expansion of the exponential function in Planck's Law, it becomes Rayleigh-Jeans Law. This results in a good approximation for Rayleigh-Jeans Law at large wavelengths since the extra terms of the Taylor series become very small.

Timestamps:

• Question 2: Using Taylor polynomials, Planck's Law approximates Rayleigh-Jeans Law at large wavelengths: 0:00
• Solution: Approximating exponential function using Taylor series: 0:28
• Recap on Taylor series: 0:56
• Exponential function as a Taylor series: 2:40
• Approximating Planck's Law using Taylor series for Exponential function: 4:03
• Approximating Taylor series for large wavelengths: 5:58
• Large wavelength approximation for Planck's Law: 6:40
• Canceling out terms of Planck's Law to get Rayleigh-Jeans Law: 8:36
• Summary: Using the first non-zero term of Taylor series only approximates Rayleigh-Jeans Law: 9:44

Full video and playlists:

• Full video:
• HIVE notes: https://peakd.com/hive-128780/@mes/applied-project-radiation-from-the-stars
• Sections playlist: https://www.youtube.com/playlist?list=PLai3U8-WIK0H9KtXz4yi98pGrnnbSSYUb
• Sequences and Series Playlist: https://www.youtube.com/playlist?list=PLai3U8-WIK0EXHAJ3vRg0T_kKEyPah1Lz .

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