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Υπολογιστής Μήκους Κύματος

Wavelength & Frequency Calculator

Frequency f (Hz)

Wave speed v (m/s)

What is Wavelength Calculator?

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Μήκος κύματος είναι η απόσταση μεταξύ δύο διαδοχικών κορυφών (ή κοιλοτήτων) ενός κύματος. Μαζί με τη συχνότητα και την ταχύτητα κύματος, περιγράφει πώς τα κύματα ταξιδεύουν στο διάστημα. Ο τύπος λ = v/f συσχετίζει και τα τρία.

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How to Wavelength Calculator

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1λ = v / f (wavelength = wave speed / frequency)
2For electromagnetic waves: v = c = 3 × 10⁸ m/s
3Frequency f is in Hz (cycles/second)
4Wavelength λ is in metres

Worked Examples

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Example 1

Given:FM radio at 100 MHz

Αποτέλεσμα:λ = 3.0 m

3×10⁸ / 10⁸ = 3 m

Example 2

Given:Red light at 700 nm

Αποτέλεσμα:f ≈ 4.3 × 10¹⁴ Hz

c / λ

Electromagnetic Spectrum

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Type	Wavelength range	Frequency range
Radio	> 1 mm	< 300 GHz
Microwave	1 mm – 1 m	300 MHz – 300 GHz
Infrared	700 nm – 1 mm	300 GHz – 430 THz
Visible light	380 – 700 nm	430 – 790 THz
Ultraviolet	10 – 380 nm	790 THz – 30 PHz
X-ray	0.01 – 10 nm	30 PHz – 30 EHz
Gamma ray	< 0.01 nm	> 30 EHz

References

›Wavelength — Wikipedia

Variable Legend

λ= wavelength (m)f= frequency (Hz)v= wave speed (m/s)c= speed of light ≈ 3×10⁸ m/sT= period (s)

Wave equation

The fundamental relationship.

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Solve for λ or f

Wavelength

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Frequency

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Period and frequency

Period is the reciprocal of frequency.

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Electromagnetic spectrum

All EM waves travel at c in vacuum.

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λ= wavelength (m)

f= frequency (Hz)

v= wave speed (m/s)

c= speed of light ≈ 3×10⁸ m/s

T= period (s)