SIP Experiment - FINAL

I conducted the experiment, the final one! I improved on the way I conducted the experiment using the tips given by Ms Tan. Here are the results, the pictures speak for themselves:

Control slice

After 10 minutes

After 20 minutes

After 30 minutes

After 40 minutes

After 50 minutes

After 1 hour

After 1 hour 10 min

After 1 hour 20 min

After 1 hour 30 min

After 1 hour 40 min

After 1 hour 50 min

After 2 hours

Set-up of experiment

Consultation with Ms Tan

Yesterday, I had a consultation session with Ms Tan, my Science teacher. It was a most fruitful session, and I picked up many tips about how to improve my experiment!

Experiment

1. My control should be the one in tap water, and not the one exposed to air since all the other peaches were immersed in a kind of liquid.

2. It is better to record the appearance of the peaches at regular intervals e.g. after every 10 min, instead of my earlier design, which was to record their appearances at 5 minute intervals for half an  hour (6 times), then at 15 minute intervals for the next 1 hour (4 times), then at 30 minute intervals for the next 2 hours (4 times).


3. When I take pictures, the curtains must be closed and only artificial light should be used to regulate the amount of light the peaches are exposed to so that the pictures of the colour of the peaches will be accurate.


4. I need to use photoshop to record their HSB values (Hue, Saturation, Brightness). This can be obtained by using a colour picker to pick a specific spot on the peaches.


5. The second part of the experiment is no longer necessary.


Anyway, here are the pictures of Part 2 since I have already conducted the experiment!

Experimental set-up

Control slice (bad photographic skills)

Peaches taken out after 15 minutes of soaking

SIP Tentative Methodology (Part 2)

Materials needed:

• 3 plastic transparent cups
• 10 small paper plates
• 3 plastic spoons
• Marker
• Juice extractor
• Knife
• Stopwatch 
• Measuring Cylinder

Materials for liquids:

• 100 ml Tap Water + 1 teaspoon of salt
• 2 Lemons
• 3 Limes
• 1 peach (cut into 10 equal slices)

Method:

1. Label all plates and cups with a marker. Arrange everything on the table, such that there are 3 rows of 3 sets of plates

2. Squeeze the fruits using the juice extractor and pour the juice into the cups. Prepare the salt water.

3. Cut the peaches into 10 equal slices. Drop 3 slices into each liquid, making sure all 3 slices are fully submerged in the respective liquids. Place the final slice on the control plate.

4. Start the stopwatch immediately when all the peach slices are in the liquid. 
5. After 5 minutes is up, take one peach slice from each cup and place it on the first row of plates.   
6. Observe each peach slice for the first sign of browning and record the time this occurred.
7. At the same time, continue timing with the stopwatch. Repeat steps 5 and 6, but this time take the peaches out 10 and 15 minutes after the start of the experiment. Place the peaches on the second row and third row of plates respectively.