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... the asteroid, Dawn revealed bands of minerals that appear as brilliant layers on the crater's steep slopes. The exposed layering allows scientists to see farther back into the geological history of ... Center at Moffett Field, Calif. Evidence for these impacts on Earth comes from thin rock layers that contain debris of nearly spherical, sand-sized droplets called spherules. These millimeter-scale clues ...

... to correct problems, like the old McDonnell-Douglas Voodoo. '''Dinkel:''' 101. '''Cortright:''' 101 had boundary layer problems in the inlet, and the eight-by-six worked on solving that. They are ... tends to push back out, down where the boundary layer is; and when it does that, it separates the boundary layer. The boundary layers run along nice and smooth. The pressure from inside ...

... had so carefully maintained with smooth tiles so it would not prematurely trip the boundary layer from laminar to turbulent. Well, Joe H. Engle, who was one of the astronauts, had ... not want to have a rough surface, because that can cause tripping of the boundary layer. Oh, I memorized practically all 35,000 tiles, and would crawl up on scaffolding and ... ." Judgment, which has to come from experience. There are no theories that can predict boundary layer transition. It's been a nemesis to all aerothermodynamicists. I used those words when I ...

... ’s thinking. He would come to us and say, “Well, Farouk, you say that this layering proves that this actually is rocky material from the outside and that it was deposited ... , what if it is dust that was compacted by the impact into these layers that you think are rock layers?” You stop to think, that’s right, because if you smoosh it ... in the mind of the guy that’s not there if you say layered. So is it striations or layers or lines or cracks? There is a difference between. There is a ...

... burning is responsible for approximately 30 percent of global biomass burning emissions, and produces extensive layers of smoke containing large numbers of cloud condensation nuclei transported by prevailing winds over the ... burning is responsible for approximately 30 percent of global biomass burning emissions, and produces extensive layers of smoke containing large numbers of cloud condensation nuclei transported by prevailing winds over the ...

... m ionosphere for communications studies. Other payloads were designed to remove electrons from the F-layer to generate a "hole" in the ionosphere. Other released chemicals would interact with ambient elements ... probe's failure to detect helium layer. USAF Cambridge Research Laboratories probe did not detect helium layer because the probe was launched at night, when the layer is so thin that the instruments ...

... ’s like going out in the mountains, but the mountains are all covered with a layer of snow, and maybe a few rocks are sitting on the surface of that snow ... . No place on the Moon did we ever see the original layers, except looking across that rille we saw layers of basalt in the vertical slope of that rille at Apollo 15 ... it is spectacular. So in these central uplift peaks, you can see what looks like layers, and that would be probably the only place where we can go where we can ...

... on radio emanations of the moon, had found evidence they believed showed that the upper layer of the moon's surface was saturated with meteoric matter distinguishing it both chemically and in mineral content from deep layers. Results were obtained during the complete lunar eclipse of last Dec. 30 observed from Ussurisk ...

... Orbiter MRO ’s Compact Reconnaissance Imaging Spectrometer for Mars (CRISM), the scientists had studied the layers of sediment comprising the 4 billion-year-old clay deposits of that region. The top ... the soil leaving large amounts of aluminum behind. Immediately below the top layer containing aluminum-rich clay was a layer of silica opal. Clay rich in reduced iron formed a still lower ...

... air that forms near the ball’s surface called the ‘boundary layer,’ and it is the state and behavior of that layer that is critical to the performance of the ball. The ... dimpled one. The dimples make the boundary layer “turbulent” which keeps the boundary layer attached to the object longer and delays separation. When the boundary layer separates from an object, drag is created ...

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