SIGNIFICANCE Psychoanalysis as Social
Science Idea
Rational Choice as Social
Science Idea​

One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. you see that the patch of light seems to be a circular diffraction pattern. it appears that the central maximum is about 1 cm across and you estimate that the distance from the window shade to the wall is about 3 m. what is (a) the average wavelength of sunlight? (b) the diameter of the pinhole?

What are two different ways you could find the value of a? explain these methods.

What is the state of matter with a specific volume but no definite shape