Of the colors in the visible spectrum, red has the lowest frequency and the longest wavelength. As you move on up the spectrum, wavelengths get shorter. Red has the longes â¦ t spectrum of all visible light. But infrared is even longer and there are many more colors but you can't see them.
1 The average age of patients diagnosed with skin cancer is dropping, from 50 to 40 years old. 2  Approximately 75 percent of damage to your skin from the sun happens by the time you are 20 years old. 3  More than 90 percent of all skin cancer cases are due to overexposure to sunlight.
Skin Cancer. With over 1 million new cases each year, skin cancer is the most common form of human cancer. There are three types of skin cancer: basal cell carcinoma, squamous cell carcinoma, and melanoma. Read about the symptoms, diagnosis, and treatment of nonmelanoma skin cancer.