ID 102023112 © Logo3in1 | Megapixl.com
Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
appears blue chart color contact damage device diagram digital electromagnetic energy exam explain eye eyesight focus frequency gamma gradient health human illustration infrared led lens light looking medical mix multiple optics radiation rainbow ray red retina science sky spectrum sunlight ultraviolet vector view visible vision wavelengths waves