The amount of time to place a lap band varies by surgeon and technique. It can be as quick as 20 minutes or last as long as two hours. It also depends on whether the patient has had previous surgery or a hiatal hernia that the surgeon needs to repair at the time of surgery. The average length of time for a lap band is approximately 45 minutes from start to finish.
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.
The human eye is only sensitive to EM radiation at wavelengths that range roughly between 780 nanometers and 380 nanometers. This small segment is called the visible spectrum or visible light. This is usually what we mean when we speak of light (though, properly speaking, all EM radiation is light). Infrared lies just below red light; ultraviolet exists just above violet light. Both are invisible to humans and other creatures (though some reptiles can see infrared and some insects can see ultraviolet).