PROJECT OBJECTIVE #1

A collaboration between Woodgrove Secondary School Science Department, Craft & Technology; and Temasek Polytechnic to design and construct a solar-powered water fountain

PROJECT OBJECTIVE #2

Creation of a learning corner for the teaching and learning of solar energy

Tuesday, May 5, 2009

Light Intensity Testing: Raw Data & Plotting of Results

Team members: please comment on the above results and your experience on measuring the sunlight intensity during different times of the day.


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4 comments:

  1. UnknownMay 17, 2009 at 9:23 PM

    Jasmine Soo here.
    hmm... althought we had to miss a few minutes of our lessons everyday to measure the light intensity, it was fun ! it's a good experience to be able to do stuffs like that.

    as mentioned, the board fell off after a few days, which made the investigation more difficult to be carried out. and it took quite some time for me to keep the 'bubble' at the centre of the circle to ensure that the stand is on flat ground. after seeing the results, well... out hard work paid off ! haha.

    the graph plotted is quite accurate actually. light intensity is the highest during noon. except for the graph in blue, it was not a good day. so i should say that our investigation on light intensity was a success ! =)

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  2. ADMINISTRATORS: JASMINE CHEN, DOUGLAS & MR JERRY TAI
    May 21, 2009 at 6:28 PM

    Jasmine Chen commented that :
    ->the solar panel should be tilted at 10° as the data show that it received the most light intensity

    ->2 out of the 4 days the weather wasn't good, so we have to consider the number of batteries for storage

    What was unexpected to me:
    Even though it rained, the light intensity did not fall to zero. It showed that there was still little sunlight when it rained.
    _____________________________________________________________________

    I guess it has been a busy week for all of us because of our mid year examinations. GOOD LUCK! and remember to post your comments after that. :)

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  3. ADMINISTRATORS: JASMINE CHEN, DOUGLAS & MR JERRY TAI
    May 26, 2009 at 2:53 PM

    Harith Danial:

    >i had took the measurement on a rainy day....
    it was quite difficult to take the measurement as it was hard to find the accurate reading in the rain.

    >while taking the measurement, the board to measure the angle of elevation came off and i had to fix it back...
    although it took some time, fortunately the board was fixed and i am able to take the measurement again.

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  4. ADMINISTRATORS: JASMINE CHEN, DOUGLAS & MR JERRY TAI
    May 26, 2009 at 3:21 PM

    Xin Quan:

    - It had been quite a while since we last recorded the measurement of the light intensity. We recorded about 9 measurements per day as the light intensive was different in different times of the days.

    - Among, the four days of measurement of the light intensive, it rained during one of the days. The very next day was actually a clear sky in the day and subsequently, it rained heavily in the late afternoon.

    - From the graph, the highest light intensity reading recorded was between 11 AM and 2 PM. The average reading was above 900Wm-2.

    - From the experiment, the hardest part was actually trying to measurement the angle of elevation. Due to the board attach to the tripod stand coming off, we spent a lot of time trying to fix it back.

    - We also had to make sure that the bubble was in the middle of the instrument. This is to ensure that the tripod was parallel to the ground.

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