# what is k

I am curious to know what is k in $$sin(kx-wt)$$.name of k.

Note by Kyle Finch
3 years, 6 months ago

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K is the wave number or better said as :

$$k=\dfrac{2\pi}{\lambda}$$

Where $$\lambda$$ is the wavelength of the wave.

- 3 years, 6 months ago

Then what is $$frac{1}{lambda}$$ in Rydberg formula .are they both same pronounced

- 3 years, 6 months ago

- 3 years, 6 months ago

Now I understood ,thanks for the link phenom

- 3 years, 6 months ago

$$k$$ in $$\sin(kx-wt)$$ is called the $$wave$$ $$number$$ in physics.

- 3 years, 6 months ago

@Deepanshu Gupta @Ronak Agarwal plz help

- 3 years, 6 months ago