On the 16th of April 2018, students in grade 6 of our MYP were treated to a a spectacular inquiry-based class by six members of the Optics Students Association of Nanjing University.
What on Earth is Light Exactly?
“What do you think of when I say the word “light”? Our visitors asked. They were in for a shock when some students gave the answer: “it’s a wave-particle duality”.
It seems as if our students really are reaping the benefits in both breadth and depth that come with international education.
What Kinds of Different Light Are There?
The main speaker at the event performed a number of experiments for us, in the process introducing a range of basic scientific principles including showing the light-giving material, silicon, showing the refraction, reflection, vibration, convergence and diffusion of light. The students watched intently, with interest writ upon their faces.
Inquiry-Based Experiment: “Behold the Wonders of Light!”
学会成员首先将模拟彩虹形成的装置发给了孩子们，小家伙们拿到材料便迫不及待地观察了起来，连连惊叹原来彩虹就是光的折射现象呀！The kind people at OSANJU had brought along a number of apparatus that mimic the light of a rainbow. The students were itching to have a try for themselves, amazed to find out that a rainbow is simply the result of light refraction.
在学会老师的带领下，进行了偏振片的滤光实验，光线穿过偏振片后，到达我们眼睛中则会呈现不同的颜色，孩子们通过旋转偏振片的角度可以在完全透明的卡片上观察到几种不同的颜色，引得孩子们边做边感叹：好神奇！Next up, the students did a filtration experiment used polaroids. As light passes through the polaroid, it alters the angle of the wave, therefore changing the colour. The students expressed their awe at being able to witness such a range of colours on an otherwise transparent object.
When placing materials of differing heat next to liquid crystal chip, the colour will change. The higher the temperature the more blue the light will become. When the students touch it, it will leave behind a warm blue colour. You could see some of the students heads moving as they exclaimed: “Oh, my LCD TV at home also does this!” Students could be seen competing to see whose hands are the warmest by producing the darkest shade of blue. The students when went on to experiment with different parts of their arms to see if it changed the effect.
More Than Just Light - A Meaningful Experience for All
Before we knew it, the event was drawing to a close, with the students reluctant to say goodbye to our guests.
In this event our students had the chance to witness firsthand many natural phenomena related to the field of optics. Many students are looking forward to next opportunity to learn more about this fascinating topic. We also look forward to any future opportunities to work together withOSANJU. We would like to take this opportunity to thank them for their visit to our school and guiding them around the world of light.