Radiant Energy Colors Will Absorb

The purpose of this experiment is to determine the maximum absorbance of fast green, and the chlorophylls, also in the case of fast green create a concentration curve to determine an unknown substance. Each test will use the spectrophotometer.

The procedures for experiment A, B, and C all start the same. The first step is to put on goggles and get the data collection device set properly. The labquest needs to be plugged into the colorimeter accurately so that a click is heard when putting it in. The labquest needs to be reading digitally and the colorimeter needs to be set to 635 nm. Then shake the chloroplast solution and take a clean cuvette and fill it with 3 mL of distilled water, 3 drops of the chloroplast solution, and cap it. This is used as a blank to calibrate your labquest. Double check that the labquest is reading absorbance, this assures that the colorimeter is plugged into the labquest accurately. Insert the blank into the colorimeter and hit the calibration button. Take out the blank and empty it. The labquest is now set to experiment with. Make sure that the heat bank is set in front of the lamp and that the lamp is on. The cuvette must be placed on the opposite side of the heat bank in the path of light in the box so that no other light can interfere with the experiment.

The experiment can also be done to compare the burn rate of different colored candles.

11. The experiment was repeated three more times using different water temperatures (room temp water, cold temp water, hot temp water).

The control experiment for this investigation will be the experimental setup of 5 trials using 5oC as the temperature. All the steps in the method will be followed.

In this experiment, the scientists are testing which amount of zinc mossy would make a few normal cleaned pennies change their colors into silver when they are placed in the boiling solution of zinc sulfate and water and then turn their colors into the brightest yellow (gold) when they are exposed directly to heat,. The independent variables in this experiment are the amount of zinc and zinc sulfate measured in gram and the dependent variables is the shades of yellow (compared in decimal R,G, B code) of the penny after all steps of the experiment. The constant of this experiment will be the temperature of the tap water used to boil the solution, which is 100°C and the temperature of the hot plate used to heat up the silver penny, which is about 300°C. And the controlled of this experiment is the pennies with the brownish color.

The main focus of this experiment was to see if different type of colours and paint affect the amount of heat absorption in a can. This was achieved by attaining four cans; the four cans were spray painted with two different colours and paint: Matte black, glossy black, matte white and glossy white. The four cans were tested to see which can would have the most heat absorption after the duration of ten minutes. It was hypothesised that the black coloured cans would have the most absorption of heat for the reason that darker colours absorb more wavelengths of light than lighter colours as lighter colours reflect wavelengths of light. Also, the surface also affects the amount of heat absorption. The glossy paint has a shiny finish, so it

BEFORE CONDUCTING THE EXPERIMENT - You should already have submitted to your teacher an EXCELLENT Investigation Design that included:

The room temperature was measured throughout the lab and kept constant at 24°C (+/- 1°C), as the lab was conducted during the same time of

13) If you ran the same experiment without passing light through a prism, what would you predict?

This experiment was checked numerous times, to ensure no errors were made. The experiment is valid because it is reliable and accurate. When performing the experiment all the variables were controlled. The same stopwatch was used, same piece of material, same environment, same pot, same fabric softener and same amount of time the material is set on fire. The independent variable was measured, as all the material was washed in in 1/3 cup of the same fabric softener.

Polymers can have their mechanical, electrical and optical properties significantly altered when exposed to light even behind window glass. This method is intended to quantify the amount of color change in flooring products

“Chameleons are well known for their colorful appearance and their ability to change colors. Although tetrachromatic color vision has been proven, UV-reflecting color patterns have not been studied in chameleons so far. The study presented here provides preliminary data on UV-reflecting color patterns in chameleons. Three Malagasy chameleon species (Furciferpardalis, Furciferlateralis and Furciferoustaleti) were investigated in terms of UV-reflectance of color patterns, using a fiber optic spectrophotometer. We show that several body regions reflect in the UV spectrum, i.e. within 300-400 nm. Functions of the reflectance in UV

Physiological tolerance lab was done at LaBagh woods forest preserve. we collected data at the LaBagh woods forest on a cold day. class members were divided into groups of 4 members. each group was assigned 3 trees by the professor. each group was given pieces of equipment to record trees data. as we received the equipment each group member assigned themselves what they will be doing. in my group, William measured the distance from the part of the tree 1 in a perpendicular line to the river edge, using meter tape. tree 1 was divided into north and south face. Mgo used an infrared thermometer to take the temperature of the north face of the tree 8 times and then he took the temperature of the north side of the tree 8 times. George notes down

The experiments took place in researchers’ area and the chamber 1 of the IEQ Lab (shown in Figure 1), the volume of which is 157m³ (8.85m×6.85m×2.60m) and the floor area is approximately 60㎡. During the experiment, the ambient temperature was kept at 27.5 ± 0.1℃. The mean radiant temperature equal the air temperature. The relative humidity was controlled at 50 ± 5%.