Who invented gobar gas system?

Is buying books from from flip-kart trusted? How can I say java based applications are secure? How did space exploration contribute to the development of artificial limbs and devices? What sentances are to do with steam? Draw a flowchart to accept 2 numbers and check if the first is divisible by the second? What is industrial maintenance? Why is a class known as composite data type? What is the difference between chip designing and chip programming? What is hall effect hall voltage? The weight of a 50kg box is closest to? What is an actionlistener? What is a nominal bore size? What did fulton design in addition to a steamboat? What is the importance of the ladder diagram? What resources would be most useful in helping to solve some of their more immediate needs? What is the process of binary search? How do you design an If-Then statement or a flowchart with a single alternative decision structure that assigns 20 to the variable y and 40 to the variable z if the variable x is greater than 100? What are the advantages and disadvantages of friction piles in construction? What is heavier sand or concrete? What is the effect of varying resitance in parallel affect current?