What is the source of hydro power energy a model for school?
Hydro energy is energy made by water.
Basically, you have three options: 1. Make a model of hydro-power plant (water flowing from higher point to lower point and making the turbine rotate and thereby running the generator. 2. Make a model of a windmill (either to make flour or electricity, it's up to you) 3. Since "hydro" means liquid, you can't really make a hydro electricity windmill model unless you put a windmill on top of your hydro-power plant. :)
Model trains and everything else that goes with them has been a fascination for men in particular for years so there are many Train Hobby Shops around. Look in your phone book or on the Internet (under your area) for Hobby Shops. They may have the plans there or go onto: www.google.com Type in: Free Specifications for a Hydro tower for model railroad (or trains).
Agegraphic dark energy is the name of a particular mathematical model for dark energy. The name appears to have been chosen as a callback to another model ("holographic dark energy") and the fact that in the ADE model, the age of the universe is a parameter. The conformal time is a parameter in this model; the energy density of the universe is inversely proportional to the square of the conformal time.