Wein's Law Constant

[arisawaters2D]

I'm reading through the textbook and there's an example using Wein's Law.

It reads...
Astronomers are often very interested in the temperatures of stars (including the Sun) because that gives a clue to the star’s size, composition, and age. The maximum intensity of solar radiation occurs at 490. nm. What is the temperature of the surface of the Sun?

I know you can use Wein's Law. The example shows the constant 2.9×10−3m⋅K being used. I'm wondering where this constant came from? Thanks!

[Nane Onanyan 1G]

Hi! The book has a great explanation on this on Page 11.
Basically, Wilhelm Wien discovered that wavelength (max) is inversely proportional to temperature, so as the wavelength of maximum intensity decreases, the temperature increases. When multiplied, it’s a constant. Similar to speed of light=(lamda)(freq.), Wein’s Law is known as wavelength(max) * T.

[arisawaters2D]

Thanks!