Anniversary

Almost a year ago, last Hari Merdeka in 2010, I decided to celebrate Merdeka by starting a blog on Physics. Exactly one year later, I am still going on strong and I now maintain several blogs. I am glad I decided to celebrate Merdeka last year by doing this little something different - blogging! The prime mover for the Physics blog was because my ex-headmistress, Pn Habshah came to Seksyen 5 in July 2010 and asked all Panitia to start writing a panitia blog. Thank you Pn Habshah!

Actually the opportunities for learning Physics via the Internet is literally limitless! Usually there are some topics your teacher haven't quite finished teaching or some topics you don't quite understand.  I do know many of you are quite worried as all the Physics topics will be tested on in the Trial SPM 2011.  I also know many schools have not quite finished the syllabus, so how do you begin to learn on your own?

Simple!  Just google whatever topic you need to learn for example, CRO movies or electronics movies or radioactivity movies - especially the last 3 topics which you haven't quite finished and you will find many many videos of teachers teaching these topics or funny videos showing you how to understand the lesson.


The following are the links on electronics
http://www.youtube.com/watch?v=D3OSTflMO80&feature=player_embedded

http://www.youtube.com/watch?v=Gnl1vuwjHto&feature=related

http://www.youtube.com/watch?v=MCe1JXaLEwQ&feature=related



The major difference between learning on the net and live from your teacher is that when you have questions, you can ask your teacher and in real life you have a relationship where your teacher and you enjoy one another's friendship and development.



Also your teacher can give you short cuts and tips to learning. For example, I like to use the Happy Family concept when teaching logic gates.  Secondly I introduce the logic gates by using an automatic artificial intelligence based on the binary system which only have two numbers 1 and 0 as in the case of the automatic piano in my music box.





This music box plays music automatically without
a human musician because of the binary system. Do you see the baby piano
in the music box?When the piano keys meet the white dots, they are raised and the input is 1.
When the keys meet the grey section the keys are down =0.
This means by positioning the white dots, I can raise the piano keys
and play a tune according to how I program the position of the white dots.

 

The AND gate is a very strict family when the father or Ayah (input A) and the mother or iBu (input B) have to agree ( be 1) before the Child gets ( output C) gets to go out and have fun any where ( output 1). The Boolean logic is simply A.B which means A multiply by B ie 1 x1 = 1 but 1x 0 = 0.
My short cut tip is the symbol looks like D for darab and D dor DAN which is BM for AND and multiply

In the OR gate, the family is less strict so if either father or mother says yes, ( input on 1) the child gets to go out. The OR gate already looks less strict since the lines are curved which means means the parents are not so straight laced or strict. The Boolean logic is A+B so if daddy A says yes = 1 but mummy says no = 0, the child gets to go out because 1+0 =1

In the Not gate, there is only 1 input so it is a bit like a single parent fanily with a rebellious child so if the parent input says yes,(1)  the defiant child says the opposite (0). My apologies to single parent families for using this allegory bcause not all children of single parent family are that rebellious.

Then you have the NAND ( Not + AND) which is really a very very rebellious child ie both parents says yes but the child says no. Similarly the NOR gate.

The exclusive gate is a little tricky. The parents are on the verge of a separation so if daddy appears, mummy won't appear and the party can be held without quarrels and vice versa but if both daddy and mummy appear, they will quarrel and the party is a no no.

You can see from the the 2nd row of the truth table for the X Or gate that if daddy A does not come (0) and mummy B comes (1) , then the child will have a party (1) but if both daddy and mummy comes as in the last  row, there will be a BIG quarrel and no party (0)

So I am trying to teach on line what I could not cover in the class. See how much you can understand and remember and come meet me on Friday in 5 M if you have questions.

Cheers and don't get so stressed out by Physics!