Tuesday, 3 March 2015

Science is a body of knowledge that is acquired through systematic observations of the natural world around us.

A scientific method is the process of obtaining research data to reach a scientific conclusion.

1) Which solvent are we using?
2) Which permanent markers are we using?
3) Where should we do the experiment?


Everybody washes their clothes and everybody will always follow the guide for the amount of detergent to put. But what if decreasing the amount of detergent used causes the clothes to be cleaner. Our ISS is to test if the amount of detergent changes the amount of permanent ink being washed off. We shaded 5 by 5 square on the different type of cloth (polyester, acetate, cotton) with permanent marker and washed it with different amount Dynamo detergent. We then used a PVC pipe to simulate an environment with a single light source, and tested the amount of light that passed through each type of fabric, with a light sensor. Our results allowed us to conclude that for clothes made of acetate and polyester, we should use less detergent, but for clothes made of cotton, we could use a little more detergent. This alerts people that using a large amount of detergent does not necessarily clean clothes more efficiently.

Tuesday, 10 February 2015


Equipment list
-Dynamo Complete Liquid Detergent (Refill pack - 1.7kg)
-Zebra Name Pen Fine x3
-Actane Fabric
-Cotton Fabric
-Polyester Fabric
-Washing Machine
-Enclosed box
-Handheld Torch (preferably high intensity for highest contrast)
-Lux Meter