November 2011 - Fluorescence vs Phosphorescence

Even nowadays, in the 21st century, the difference between fluorescence and phosphorescence as defined underneath is in the minds of many engineers, trainers, etc.

• Fluorescence is an emission of light that disappears with the end of excitation.
• Phosphorescence is an emission of light that goes on for some time after the end of excitation.

October 2011 - White light VS Visible light

Once again, we have to draw our readers’ attention to some terms used in documents, meetings, conferences, training documents, etc.

This month, the topic is "white light" versus "visible light", terms that, although they mean different things, are often used one for the other.

September 2011 - Airbus A 350 XWB Wings

One of us, invited by the French COSAC(1) to the 49th International Paris Air Show Le Bourget, which was held on June 20-26, 2011, had the opportunity to be very close to and to marvel at the seeing of aircraft during their world première, such as the Airbus A 400 M, Boeing B 747-8 Intercontinental, etc.

This month, we are to give you some pieces of information dealing neither with PT nor MT, as the topic is the future Airbus A 350 XWB.

July/August 2011 - ‘‘Black’’ Light

Many decades ago, the term ‘‘black light’’ has been “invented” when applied to electromagnetic radiation ranging from 180 to 400 nanometers.
Why “black light”? Probably, because it was understood that these wavelengths were physically similar to the visible light, though shorter: there were invisible to the human eyes.