CHALLENGER'S LOST LESSONS - ER - NASA

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64chromatography, ink becomes soaked in the water drop so thatthe different pigments begin to separate or "bleed" apart. Thisresults in the true colors being discovered. For Christa, one of thetrue colors in the black ink spot separated out by chromatographywas blue.But more discussion of the science is needed. Why does oneink separate apart from another, and why does the water movetoward the ink spot in the filter paper strip? The first question’sanswer is: When a substance dissolves in a liquid like water, it issaid to be soluble. Since this quality of being soluble differs insubstances, each color will dissolve at a different rate so ink colorseparation occurs as the water soaks into the black ink spot. Whilethat explains the separation, what about the creeping movement ofthe water toward the ink spot?One definition of capillary action is: The action (some call itwicking) whereby a liquid like water spontaneously slowly moves upthin tubes and/or fibers as a result of forces, adhesive and cohesive,as well as surface tension. While this is a definition of thephenomena, what actually causes it? The answer is altogethercomplicated such that scientists have studied the process forcenturies. Yet, without it mankind would be in severe difficulties forsurvival. Plants grow as a result of the process of capillary actionproviding food for life. Suffice it to say that capillary action consistsof having various forces contributing to the adhesion of water oranother liquid to a solid such as wood as well as the cohesion ofwater or other liquid molecules with one another playing a criticalrole in the climbing or moving process.Christa Planning Chromatography in Space Demonstration
65Hold down CTRL Key and click on:chromatography_ground_practice.wmvThe video is played in media player.In the above video, Christa deals with planning theapplication of the water via the dropper to the chromatography testpaper. She considers camera angles in order to record thecapillary/osmosis process in zero-G as the water ascends toward theink spot. The team discusses how launch and on-orbit operationsmay affect the stowed test paper strip prior to performing theexperiment.The photo below is cropped from Christa’s ground exerciseof the chromatography experiment video..
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CHALLENGER’S LOST LESSONSProject
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3CHALLENGER’S LOST LESSONS[Backgr
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5Obviously, because of the loss of
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7collectively. Other constraints we
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9Hydroponics ChamberAnother aspect
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11been ingested by crewmembers or e
Page 13 and 14: 13of the mass of each other. This w
Page 15 and 16: 15effervescent tablet, and a water
Page 17 and 18: 17would have been observed instead
Page 19 and 20: 19with an insert to provide frictio
Page 21 and 22: 21Challenger’s Live Lost LessonsW
Page 23 and 24: 23[For a preliminary or concluding
Page 25 and 26: 25THE LOST HYDROPONICS CHAMBER LESS
Page 27 and 28: 27Hold down CTRL Key and click here
Page 29 and 30: 29i.e., the leaves may simply droop
Page 31 and 32: 31After each daily spraying of the
Page 33 and 34: 332. What impact would ambient ligh
Page 35 and 36: 35Christa Practicing Bar Magnet in
Page 37 and 38: 37Observe the movement of the right
Page 39 and 40: 39would permit filming. The movie w
Page 41 and 42: 41What Happened?(Study the video ta
Page 43 and 44: 43How do you believe Christa’s su
Page 45 and 46: 45the final lines of force pattern.
Page 47 and 48: 47permanent magnet.)The assembly of
Page 49 and 50: 49THE LOST NEWTON’S LAWS LESSON
Page 51 and 52: 51Such an experiment reminds educat
Page 53 and 54: 53equal for both projectiles. Cups
Page 55 and 56: 55Process:Cutaway view of spring re
Page 57 and 58: 57Questions to Answer:1. What did y
Page 59 and 60: 59THE LOST EFFERVESCENCE LESSONThe
Page 61 and 62: 61dioxide. The gas was contained in
Page 63: 63THE LOST CHROMATOGRAPHY LESSON“
Page 67 and 68: 67of Christa to see how her apparat
Page 69 and 70: 69THE LOST SIMPLE MACHINES LESSONIn
Page 71 and 72: 71station actually has a trolley ty
Page 73 and 74: 733) A screwdriver and wood screws.
Page 75 and 76: 75*3. Hammer a nail lightly into th
Page 77 and 78: 77What Would Have Happened on Chall
Page 79 and 80: 79through” to view the set up for
Page 81 and 82: 81The “The Ultimate Field Trip”
Page 83 and 84: 834. If you were to teach the seven
Page 85 and 86: 85Unlike, the first live lesson whi
Page 87 and 88: 87Concerning the tripod, Pilot Mike
Page 89 and 90: 89A Classroom Version of Christa’
Page 91 and 92: 91easily done in the KC-135 aircraf
Page 93 and 94: 93and gaseous substances on earth a
Page 95 and 96: 95Wright Brothers’ AirplaneIntern
Page 97: 97Instructions for using the attach
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CHALLENGER'S LOST LESSONS - ER - NASA

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