Tuesday, June 29, 2010

Physics Form 5: Chapter 4 - Cathode Ray Properties

Properties of cathode ray:
  • Moves in straight line

Cathode rays are being blocked by Maltese cross and a cross-shaped shadow is formed. This shows that cathode rays travel in straight line.

  • Carries momentum and energy
  • Are charged negative
  • Can be deflected by electric field

  • Can be deflected by magnetic field.
The path traced is an arc of a circle. Fleming's Left-hand Rule is used to determine the deflection of cathode rays.
  •  Can produce fluorescence when they strike at fluorescent material

 Click on the diagram below to play!

Study is not all about SCHOLARSHIP

Recently, we are disturbed by scholarship woes in our country where top students were unable to get a scholarship. This issue has been dragged on for so many years, and yet still cannot be solved amicably. It was very disheartened for students as well for parents hoping to get assistance from goverment. Why goverment can't give scholarship to deserved students regardless their race or religion background? We don't need to spend millions of ringgit in building a new Istana Negara complex or House of Parliament in Putrajaya, our bright children just need scholarship. These students are nation asset and should be roped in to help our nation towards achieving high-income nation by 2020. A talented and competent human resource is far more important than natural resources.

As a teacher, I always advise my students to study hard and get a good grades so that they have a higher chances to get scholarship especially students from the poor background. I used this scholarship reward to motivate students to study diligently. At least, these students have goal and objective in pursuing studies. But, what happening now is they are losing hope. The students came and asked me these type of questions:-

What's the point I study so hard but cannot get a JPA scholarship?
Why my country treat me like second class citizen as I loved my country?

How I am going to answer them?..... I only can advise them to try other country's sponsor scholarship such as Singapore's Asian Scholarship. Study is to get knowledge but it is added bonus if you can get a scholarship. My dear students, do not give up in pursuing studies. With knowledges you gained, you are able to solve various difficulties, to challenge yourself to a greater height, and to live in a meaningful way. Do not let yourself in despair mood just because you cannot get scholarship. Continue your effort in pursuing your dream. God will always help those who are righteous and truthful. If you cannot get a scholarship here, God will open another door for you. HE will give you a surprise for those who truly seek HIS WAY.