What's the Graphic?
Discovery of the positron
in 1932 by Carl D. Anderson
in a cloud chamber. The image shows a path similar to that of an electron, but curving the opposite direction in an applied magnetic field due to its positive charge.
The graphic shows tracks from a cloud chamber.
Per Wikipedia (www.wikipedia.org), a cloud chamber is used for detecting particles of ionizing radiation. In its most basic form, a cloud chamber is a sealed environment containing a supercooled, supersaturated water vapor. When an alpha particle or beta particle interacts with the mixture, it ionizes it. The resulting ions act as condensation nuclei, around which a mist will form (because the mixture is on the point of condensation). The high energies of alpha and beta particles mean that a trail is left, due to many ions being produced along the path of the charged particle. These tracks have distinctive shapes (for example, an alpha particle's track is broad and straight, while an electron's is thinner and shows more evidence of deflection).
Now the question is of course “Why the graphic?”
Well, in order to obtain ionizing radiation, a high energy particle (e.g. a gamma ray) must hit another particle. The particles must collide head-on or they will glance off of one another and nothing will result. In other words, the particles must be perfectly targeted or there will be no reaction. The chamber is a metaphor of our need to perfectly target our marketing messages, our timing, and our channel, in order to achieve the desired effect.
Per Wikipedia (www.wikipedia.org), a cloud chamber is used for detecting particles of ionizing radiation. In its most basic form, a cloud chamber is a sealed environment containing a supercooled, supersaturated water vapor. When an alpha particle or beta particle interacts with the mixture, it ionizes it. The resulting ions act as condensation nuclei, around which a mist will form (because the mixture is on the point of condensation). The high energies of alpha and beta particles mean that a trail is left, due to many ions being produced along the path of the charged particle. These tracks have distinctive shapes (for example, an alpha particle's track is broad and straight, while an electron's is thinner and shows more evidence of deflection).
Now the question is of course “Why the graphic?”
Well, in order to obtain ionizing radiation, a high energy particle (e.g. a gamma ray) must hit another particle. The particles must collide head-on or they will glance off of one another and nothing will result. In other words, the particles must be perfectly targeted or there will be no reaction. The chamber is a metaphor of our need to perfectly target our marketing messages, our timing, and our channel, in order to achieve the desired effect.
Discovery of the positron
in 1932 by Carl D. Anderson
in a cloud chamber. The image shows a path similar to that of an electron, but curving the opposite direction in an applied magnetic field due to its positive charge.