The visible spectrum is the portion of the electromagnetic spectrum that is visible to (can be detected by) the human eye.Electromagnetic radiation in this range of wavelengths is called visible light or simply light.he visible spectrum is the portion of the electromagnetic spectrum that is visible to (can be detected by) the human eye.
Potty-training success hinges on physical and emotional readiness, not a specific age. Many kids show interest in potty training by age 2, but others might not be ready until age 2 1/2 or even older â and there's no rush. If you start potty training too early, it might take longer to train your child.eady, set, go! When you decide it's time to begin potty training, set your child up for success. Start by maintaining a positive attitude â and recruiting all of your child's caregivers to do the same. Then follow these steps.
Most parents start the training when their children are between two years and three years old. But there's no official age, and you needn't potty train your toddler at all if you don't want to. Your child may copy others without needing any instructions, as long as you make it clear to her what she has to do, and where she must do it.