2. Light is a wave that travels at a speed of 3 x 108 m/s. The different colors that we see are light waves that have different frequencies/wavelengths. For instance blue light has a wavelength of 450 nm (n here stands for 'nano' or 10-9). Determine the frequency of red light. Write down the equation for the lights propagation through space (y as a function of x), and an expression for the lights propagation through time (y as a function of t).

2. Light is a wave that travels at a speed of 3 x 108 m/s. The different colors that we see are light waves that have different frequencies/wavelengths. For instance blue light has a wavelength of 450 nm (n here stands for 'nano' or 10-9). Determine the frequency of red light. Write down the equation for the lights propagation through space (y as a function of x), and an expression for the lights propagation through time (y as a function of t).