When you're being selfless, you're thinking of other people before yourself. Selfless is the opposite of selfish. If you're selfless, you think less about your self, and more about others â you're generous and kind. Being selfless is similar to being altruistic â another word for giving to others without looking for personal gain. If you give time, money, or things to other people without expecting something in return, that's selfless. Most people would agree that the world would be a better place if there were more selfless behavior.
Want to see a demo you can do with infrared radiation? Click here... The Visible Spectrum Visible light is the light that we can see, and thus is the only light detectable by the human eye. White light is visible light, and it contains all the colors of the rainbow, from red to violet. The range of visible wavelengths is 400 to 700 nanometers.
Answer Your brain can't see heat, ultraviolet light, radiowaves,  X-Rays, etc. with your naked eyes, because these different kinds of  light's wavelengths are either too lon â¦ g or too short for your naked  eyes to see. So that is why you can't see infrared.he two ligh energy waves that you can't see are ultra-violet (UV), and infra-red (IR).  Ultra-violet light waves are measured at 380nm and below, infra-red light waves are â¦ 750nm and above.  Normal light that you can see resides between these two regions.