1. What is Wien's Law?

Wien's Law describes the relationship between the temperature of a black body and the wavelength at which it emits the most radiation. It states that the peak wavelength is inversely proportional to the temperature.

2. How Does the Calculator Work?

The calculator uses Wien's Law equation:

Where:

• \( \lambda_{\text{max}} \) — Peak wavelength in micrometers (μm)
• \( T \) — Temperature in Kelvin (K)
• 2897 — Wien's displacement constant (μm·K)

Explanation: The equation shows that hotter objects emit radiation at shorter wavelengths, while cooler objects emit at longer wavelengths.

3. Importance of Wien's Law

Details: Wien's Law is fundamental in thermodynamics and astrophysics, used to determine the temperature of stars and other celestial bodies based on their radiation spectra.

4. Using the Calculator

Tips: Enter temperature in Kelvin (K). The value must be greater than 0. The result will be the peak wavelength in micrometers (μm).

5. Frequently Asked Questions (FAQ)

Q1: What is a black body?
A: A black body is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence.

Q2: How accurate is Wien's Law?
A: Wien's Law provides a good approximation for the peak wavelength of black body radiation, though real objects may deviate from ideal black body behavior.

Q3: What are typical temperature ranges for this calculation?
A: The law applies to any temperature above absolute zero, but is particularly useful for temperatures ranging from hundreds to thousands of Kelvin.

Q4: Can this be used for non-black bodies?
A: While primarily for black bodies, it can provide approximate results for real objects, though with reduced accuracy.

Q5: What are some practical applications?
A: Applications include determining star temperatures, infrared thermometer design, and thermal imaging systems.