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.
Some cells are visible to the unaided eye. The smallest objects that the unaided human eye can see are about 0.1 mm long. That means that under the right conditions, you might be able to see an ameoba proteus, a human egg, and a paramecium without using magnification. A magnifying glass can help you to see them more clearly, but they will still look tiny.