February 28, 2008
12:00 p.m. - 2:00 p.m.
First, I checked the record of the highest and lowest temperature of every day for the past week for inside the greenhouse and the area just outside.
Dr. McFarland suggested I attach an empty pot to the top of the experiments of etiolation so when the time comes to place a cover on them, the plants will still have room to grow. Three holes were punched in the rims of the pots, and then they were attached with twine.
Last I checked what time the sun had been rising - 6:30 a.m. - and setting - 7:00 p.m. I used that information to set the time the plants in the growth chamber would experience light and dark.
Computer that records temperatures outside and in greenhouse, and also records time of sunrise and sunset.
How the etiolation experiments were set up.
The control panel for the growth chamber that contains the heat experiment.
The control panel for the growth chamber that contains to cold temperature experiment.
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