1. The problem statement, all variables and given/known data Is the velocity of a bunsen burner flame proportional to the cold flow velocity? 2. Relevant equations S = Usin a Where S = flame velocity U = cold flow velocity a = half cone angle 3. The attempt at a solution I took numerous photographs of flames of increasing flow rate and drew a triange over the flame front and then used the trig equation about to calculate S. ( I knew U from the flow metres) I have that S increases with U but I dont know if this is right! I'm on a meltdown at the moment and this thing is due in the morning and it's driving me mad!!!