What is ozone ?
Ozone is a more active form of oxygen, and is frequently found in mountain and sea air. It has a very fresh and pungent smell which is often noticeable after …
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Ozone is a more active form of oxygen, and is frequently found in mountain and sea air. It has a very fresh and pungent smell which is often noticeable after …
Oxygen is an invisible gas without taste or smell. It does not burn but things burn in it. It is necessary, in order to oxidize (or burn) the food taken …
Read more.What are the main characteristics of oxygen ? Why is it essential to life ?
The propeller blade is pushed down by hand. The engine responds simultaneously and the motion continues. The machine runs along the ground, and when sufficient speed has been acquired it …
Tethered or captive balloons which are of great use in war for watching the enemy’s movements.These balloons are mostly used in observing the effects of artillery fire, taking photographs, making maps, …
Banking turn in aircraft and plane” is the practice of making a turn with the inner side of the aeroplane lower than the outer. (b) “ Volplaning means gliding or coasting …
Read more.What is meant by banking Volplaning And Stability In Aircraft
In making the frame of an airship of parts of the engine in an aeroplane, strength combined with lightness is a most important consideration. To secure this aluminium is largely …
Read more.What metal is largely used in the construction of aircraft, and why ?
(a) It can be used to search for hostile sea-craft. (b) Submarines can readily be seen from it when moving at a depth of from ten to fifteen yards beneath …
Read more.To What Uses Can A Hydroplane Be Put In Time of War?