Chapter 7, Problem 7.128SP

Interpretation Introduction

Interpretation:

The number of photons per second that an eye of owl can detect has to be calculated from the given diameter of owl’s pupil and wavelength of light.

Concept introduction:

The energy of each photon is given as

$\text{E}\text{=}\text{hν}$

h is the Planck’s constant ($\text{6}\text{.63}\text{×}{\text{10}}^{\text{-34}}\text{J}\text{.s}$ ) which relates energy and frequency.

$\text{ν}$ is the frequency.

E is the energy of light particle.

The mathematical equation of various characteristics of light wave is given as follows,

$\text{c = νλ}$

C is the speed of light ($\text{3}{\text{.00 × 10}}^{\text{8}}\text{ m/s}$).

$\text{ν}$ is the frequency

$\text{λ}$ is wavelength.