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A polytropic process is a thermodynamic process that obeys the relation: = where p is the pressure , V is volume , n is the polytropic index , and C is a constant. The polytropic process equation describes expansion and compression processes which include heat transfer.
Neutron stars are well modeled by polytropes with index between n = 0.5 and n = 1. A polytrope with index n = 1.5 is a good model for fully convective star cores [5] [6] (like those of red giants), brown dwarfs, giant gaseous planets (like Jupiter). With this index, the polytropic exponent is 5/3, which is the heat capacity ratio (γ) for ...
The particular choice of a polytropic gas as given above makes the mathematical statement of the problem particularly succinct and leads to the Lane–Emden equation. The equation is a useful approximation for self-gravitating spheres of plasma such as stars, but typically it is a rather limiting assumption.
While many dog owners know that giving Fido chocolate can causing poisoning, there other lesser known foods that need to be kept away from your dog. 9 types of food you should never feed your dog ...
You can feed your dog eggs as long as they are cooked. Your pet can enjoy a variety of preparations, such as hardboiled or scrambled , Purina recommends. Dogs can have eggs as an occasional treat.
Part of this growing trend is the commercialization of home-made dog food for pet owners who want the same quality, but do not have the time or expertise to make it themselves. [60] The advantage is forgoing the processing stage that traditional dog food undergoes. This causes less destruction of its nutritional integrity.
Experts offer a list of the fish that have the most health benefits — from salmon and sardines to tilapia and tuna — plus which fish to avoid and why. These fish are the best and worst for ...
Iams (/ ˈ aɪ ə m z /) is an American brand of dog food and cat food manufactured by Spectrum Brands in Europe and Mars, Incorporated worldwide excluding Europe. The food is formulated for the puppy/kitten, adult and mature stages of life. Veterinary formulas for pets with special dietary requirements are also produced. [1]