Now over my course of study in the Harry Potter Realm of wand making, there are things J.K. Rowling based her ideas of how she could organize who got what type of wand. I have compiled a lot of her thoughts and a bit of my own to create a logical and mathematical way of finding the perfect wand.

First off it the wood type, Rowling has đã đưa ý kiến on many occasions at first it was completely random, and she really only specified Harry and a couple others wands, and later found under the Celtic wand system that was based on birthday, Harry's wand would still be Holly, and so she started incorporating...

Watt’s contribution to engine thiết kế was one of practicality and reliability. Corliss’s contribution was one of efficiency, creating engines that took advantage of every last drop of energy available to it. Because of these improvements steam engines were finally able to surpass water power in terms of economic feasibility and surge ahead to become the de factor power nguồn of the late 19th century.

On its surface the Corliss styled engine is very similar to its Watt’s style brethren. Steam is delivered into a large cylinder through means of a throttle valve, which is automatically...