There is much excitement and speculation about the use of hydrogen as a greener fuel of the future. It is true that hydrogen does not produce greenhouse gases when burned and produces more energy than gasoline, however the challenges of working with hydrogen are significant and often simplifie...
The use of photo-ionisation detector (PID) in recent years has become increasingly common. For the detection of volatile organic compounds such as benzene or toluene no other common sensor type comes close to detecting the gas at the part per million (or even part per billion) level required, ...
Gas! GAS! Quick, boys!—An ecstasy of fumbling
Fitting the clumsy helmets just in time,
But someone still was yelling out and stumbling
And flound’ring like a man in fire or lime.—
Dim through the misty panes and thick green light,
As under a green sea, I saw him drowning.
The green sea Wilfred Owen ...
