The focus of Lesson 2 will be upon the visible light region - the very narrow band of wavelengths located to the right of the infrared region and to the left of the ultraviolet region. Though electromagnetic waves exist in a vast range of wavelengths, our eyes are sensitive to only a very narrow band.
Broccoli contains a substantial amount of nutrients that are extremely good for health including vitamins A, C, folic acid, fiber and calcium. This cruciferous vegetable has also become popular because of its ability to offer the following health benefits: 1. Prevents cancer. Broccoli is rich in glucoraphanin which can be processed by the human body into a kind of compound capable of preventing cancer.
The sulforaphane from broccoli plays a role in activating more than 200 different genes. And you don't have to consume a truckload of broccoli to reap its benefits. In fact, a 2008 study published in PLoS One found that just four servings of broccoli per week could protect men from prostate cancer.