When a drop falls from a moderate height into a shallow pool, its impact creates a complicated pattern. The photo above is a composite image showing a top-down view 100 ms after such an impact. On the left side, the flow is visualized using dye whereas the right shows a schlieren photograph, in which contrast indicates variations in density. Both methods show the same general structure - an inner vortex ring generated at the edge of the impact crater and formed mostly of drop fluid and an outer vortex ring, consisting primarily of pool fluid, formed by the spreading wave. Both regions show signs of instability and breakdown. (Photo credit: A. Wilkens et al.)
here is a tribe in Africa where the birth date of a child is counted not from when they were born, nor from when they are conceived but from the day that the child was a thought in its mother’s mind. And when a woman decides that she will have a child, she goes off and sits under a tree, by herself, and she listens until she can hear the song of the child that wants to come. And after she’s heard the song of this child, she comes back to the man who will be the child’s father, and teaches it to him. And then, when they make love to physically conceive the child, some of that time they sing the song of the child, as a way to invite it.
And then, when the mother is pregnant, the mother teaches that child’s song to the midwives and the old women of the village, so that when the child is born, the old women and the people around her sing the child’s song to welcome it. And then, as the child grows up, the other villagers are taught the child’s song. If the child falls, or hurts its knee, someone picks it up and sings its song to it. Or perhaps the child does something wonderful, or goes through the rites of puberty, then as a way of honoring this person, the people of the village sing his or her song.
In the African tribe there is one other occasion upon which the villagers sing to the child. If at any time during his or her life, the person commits a crime or aberrant social act, the individual is called to the center of the village and the people in the community form a circle around them. Then they sing their song to them.
The tribe recognizes that the correction for antisocial behavior is not punishment; it is love and the remembrance of identity. When you recognize your own song, you have no desire or need to do anything that would hurt another.
And it goes this way through their life. In marriage, the songs are sung, together. And finally, when this child is lying in bed, ready to die, all the villagers know his or her song, and they sing—for the last time—the song to that person.
You may not have grown up in an African tribe that sings your song to you at crucial life transitions, but life is always reminding you when you are in tune with yourself and when you are not. When you feel good, what you are doing matches your song, and when you feel awful, it doesn’t. In the end, we shall all recognize our song and sing it well. You may feel a little warbly at the moment, but so have all the great singers. Just keep singing and you’ll find your way home.
This is so sweet.
Face To Face
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Steam rises from the heated pad below a GEnx engine, following a nighttime ice test at GE Aviation in Winnipeg, Canada. Temperatures were around -20 degrees F.
Three smartphones destined to become low-cost satellites rode to space Sunday aboard the maiden flight of Orbital Science Corp.’s Antares rocket from NASA’s Wallops Island Flight Facility in Virginia.
The trio of “PhoneSats” is operating in orbit, and may prove to be the lowest-cost satellites ever flown in space. The goal of NASA’s PhoneSat mission is to determine whether a consumer-grade smartphone can be used as the main flight avionics of a capable, yet very inexpensive, satellite.
Transmissions from all three PhoneSats have been received at multiple ground stations on Earth, indicating they are operating normally. The PhoneSat team at the Ames Research Center in Moffett Field, Calif., will continue to monitor the satellites in the coming days. The satellites are expected to remain in orbit for as long as two weeks.
NASA engineers kept the total cost of the components for the three prototype satellites in the PhoneSat project between $3,500 and $7,000 by using primarily commercial hardware and keeping the design and mission objectives to a minimum. The hardware for this mission is the Google-HTC Nexus One smartphone running the Android operating system.
We could have had it all.