Arago Spot With Matter Waves
Recently, the Arago spot experiment has been demonstrated with a supersonic expansion beam of deuterium molecules, so-called neutral matter waves. Material particles behave like waves as is known from quantum mechanics. The wave-nature of particles actually dates back to de Broglie's hypothesis as well as Davisson and Germer's experiments. An Arago spot of electrons, which also constitute matter waves, can be observed in transmission electron microscopes when examining circular structures of a certain size. The observation of an Arago spot with large molecules, and thus proving their wave-nature is a topic of current research.
Read more about this topic: Arago Spot
Famous quotes containing the words spot, matter and/or waves:
“it was my birthday, and a candle
burnt a sore spot on my finger, and I was told to be happy,”
—Muriel Rukeyser (19131980)
“It is not much matter which we say, but mind, we must all say the same.”
—William Lamb Melbourne, 2nd Viscount (17791848)
“In the Yangtze River waves push the waves ahead; so in life new people constantly replace the old ones.”
—Chinese proverb.