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Wavelength-Frequency Equation:
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The wavelength-frequency equation (λ = c / f) describes the relationship between the wavelength of electromagnetic radiation, its frequency, and the speed of light. This fundamental equation is used across various fields of chemistry and physics.
The calculator uses the wavelength-frequency equation:
Where:
Explanation: The equation shows that wavelength and frequency are inversely proportional - as frequency increases, wavelength decreases, and vice versa.
Details: Calculating wavelength is essential in spectroscopy, quantum chemistry, and electromagnetic radiation studies. It helps determine energy levels, identify chemical compounds, and understand light-matter interactions.
Tips: Enter frequency in Hz and speed of light in m/s (default is 300,000,000 m/s). All values must be valid (frequency > 0, speed > 0).
Q1: Why is the speed of light constant in this equation?
A: The speed of light in vacuum is a fundamental physical constant (approximately 3×10⁸ m/s) that remains unchanged regardless of frequency or wavelength.
Q2: What are typical frequency values in chemistry?
A: Frequencies range from radio waves (kHz-MHz) to visible light (10¹⁴-10¹⁵ Hz) to gamma rays (10¹⁹+ Hz), depending on the application.
Q3: How does wavelength relate to energy in chemistry?
A: Shorter wavelengths correspond to higher energy photons (E = hc/λ), which is crucial for understanding chemical reactions and molecular spectroscopy.
Q4: Can this equation be used for sound waves?
A: While similar in form (λ = v/f), sound waves use the speed of sound instead of light speed, and the principles differ from electromagnetic radiation.
Q5: What are common wavelength units in chemistry?
A: Common units include meters (m), nanometers (nm, 10⁻⁹ m), and angstroms (Å, 10⁻¹⁰ m), with nanometers being most common for visible light.