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Operationally, too. eyes had been on the ground—breaking ribbon microphone invented by rca, the radio corporation of america, but it was a little too expensive so in true bbc form they made their own for less than 10% of what rca were charging. nice going. the type a stayed in use by the bbc from 193a until 1959. a whole 25 years. that is a long time when technology was developing so rapidly. so what about inside? the type a is called a ribbon microphone. that's because behind the perforated cover is exactly that, a ribbon of metal. with the help of one of the trusty bbc engineering manuals,...

That's a long time when technology was developing so rapidly. so, what about inside? the type a is called a ribbon microphone — that's because behind the perforated cover is exactly that — a ribbon of metal. with the help of one of the trusty bbc engineering manuals, we can see that sound waves come in from either the front or the back and hit the ribbon in the middle. so thin that it flexes and wiggles when the noise vibrations in the air hit it — just like your eardrum. the flexing moves the ribbon through a magnetic field created by two magnets on either side. doing this generates a v...

Technology was developing so rapidly. so, what about inside? the type a is called a ribbon microphone. that's because behind the perforated cover is exactly that — a ribbon of metal. with the help of one of the trusty bbc engineering manuals, we can see that sound waves come in from either the front or the back and hit the ribbon in the middle. so thin that it flexes and wiggles when the noise vibrations in the air hit it, just like your eardrum. the flexing moves the ribbon through a magnetic field created by two magnets on either side. doing this generates a very small voltage which is uni...

A ribbon microphone. that's because behind the perforated cover is exactly that, a ribbon of metal. with the help of one of the trusty bbc engineering manuals, we can see that sound waves come in from either the front or the back and hit to the ribbon in the middle. so thin that it flexes and wiggles when the noise vibrations in the air hit it, just like your eardrum. the flexing moves the ribbon through a magnetic field created by two magnets on either side. doing this generates a very small voltage which is unique to the sound it is taking in. the microphone then connects to studio equipment...

Situation they are facing? >> what i can recall from being in new orleans, it was due to the storm surge. this surge is not as great during this incident. the storm existing a very long time dumping a massive amount of rain. >> and how much is still on the way? >> that is basically why we are taking these proactive measures now. because the thing is we do not want to keep water in the reservoirs to where they exceeded capacity. his wife we are releasing little by little now so we can store more that is projected to come down in the future. >> how confident are you that this will do anything? >...