pHysics iN eVeryDay lIfe

Sunday, November 11, 2007 ' 5:30 AM Y

...pEriodic tEst..new lesson... '

i am so nervous of what will be the result of my periodic test. i am scared to fail but God is so great. i got 43, i passed!!! what an achievement for me. i know that to others it is good but i think to mr. mendoza it is not. (hehe..tAma b sir...?=])

we have tackled already our new lesson. it is all about current, resistance, resistivty. waah...

first quiz, 3. wHAt!!!.. so sad but it was all my fault. i used the wrong exponent for milli. kainis.... but i always take it as a lesson. now i am more careful on every step i made.

-:p-

pHysics iN everYday lIfe ;

Tuesday, October 23, 2007 ' 1:34 AM Y

w00h.... '

many things happened this month. the periodic test, long test, quizzes and science camp.

the long test are difficult and i thank God i passed it. i am so stupid because i should have got the correct answer on the first problem solving but i forgot to square root the answer that's why i am so sad. it is an0the less0n that i would stuck on my mind.

the periodic test, i would say it's easier than the long test but still i'm nerv0us of the score i would get. i hope that i will pass the test. i am sure that i have one point already because there's one number which is a bonus item..(yahoo...)

quizzes....ahhmmm/...it's quite alright but i think the cummulative score i got was not that high. i need to strive more...waahhh...

the science camp...i can't imagine up to now we won the second place...haha...i found it quite boring...but it was fun...wahaha...i couldn't help but sleep for about 20 minutes. i am so sleepy...

pHysics iN everYday lIfe ;

Sunday, September 30, 2007 ' 1:03 AM Y

...i wiLL tRy... '

this is the last day of sEptembeR and tHis is mY lAst eNtry of thE m0nth. we have a new leSs0n aNd itS about eLectriCity. i hAve als0 leArned a neW f0rmula the coulomb's law. anD it's kinda c0mplicated buT iT's okAy.

wE als0 had our new set oF quizzes anD mY sc0res were terrible. i t0ld mysElf i d0n't wanT t0 get thAt sc0res anym0re bUt hEre c0mes agAin. fIrst quiz ZERO. (whAt!!!!) sEc0nd quiz FOUR. (yUck!!!!) i aM s0 disapp0intEd with wHAt i g0t.

i thInk i sh0uld sTudy again trAnsf0rmati0n of f0rmulas. i pR0mise i wiLl try my beSt next time.

pHysics iN everYday lIfe ;

Saturday, September 22, 2007 ' 4:47 AM Y

...fUn and c0mplicated... '

tHis is my fIrst eNtry on thE m0nth of septEmbeR...

i w0uld like t0 describe this m0nth's physics class as a hectic one because of oUr pr0ject and the presentati0n of it...I aM s0 hAppy wIth thE outc0me of aLL ouR eff0rTs anD time bEcauSe we g0t 92 in the pResentAti0n of tHe s0ng wE madE ab0ut rAdiati0n... iT was rEally fun...eVEnth0ugh we're all tiRed...i aM s0 happy...

thIS m0ntH iS als0 full of nEw lEss0ns...c0mplicated lEss0ns..

i tHInk thAt i sh0uld rEAlly sTudy haRder thIS gRAding pEri0d beCAuse mY grAde might fAll d0wn...aNd i d0n't wAnt thAt t0 hAppen...wE alrEAdy t00k ab0ut 10 quizzes and mY cummulative sc0re wAs alright but i stIll nEed t0 strive m0re..

the fIrst less0n in the sEc0nd quArter is a bit easy buT thE next less0n bEcame compliCated beCause there weRe a l0t of f0rmulas...

i jUSt thinK of p0sitive things s0 i will n0t be pressured...i wIll juSt d0 my paRt and d0 my verY beSt in eVEry less0ns we hAve anD will be hAving...

pHysics iN everYday lIfe ;

Saturday, August 25, 2007 ' 12:30 AM Y

...tHank God... '

at lasT tHE fiRst quArter hAd enDed and an0ther quarter t0 face again...wAah...i am s0 hAppy becaUse i pAssed the pEri0dic tesT buT i aM n0T suRe if i wIll pAss thE sUbject or n0t..awwW.

n0w wE hAve stArted tHe less0n aBout rAdiAti0n...wE hAd a dIscussi0n lAst thuRSday and i wAs called t0 discuSs one of thE t0pics. i wAs s0 nerv0us s0 i can hArdly expresS wHAt i wAnt t0 say. i thinK thAt alL i hAve sAid thAt daY waS s0 fAr t0 wHAt is wRitten on the xEr0x c0py.

aFter thE discuSsi0n we aNsweRed a puZzle anD i aM s0 happY bEcause i g0t a perfeCt sc0re.

pHysics iN everYday lIfe ;

Thursday, August 9, 2007 ' 2:41 AM Y

rAy dIagrAms f0r tHin lenSes '

RAY DIAGRAMS FOR CONVERGING LENSES

1. ray 1 is drawn parallel to the principal axis. After being refracted by the lens, this ray passes through one of the foval point.

2. ray 2 is drawn through the center of the lens. This continues in a straight line.

3. ray 3 is drawn through the other focal point and emerges from the lens parallel to the principal axis.

The intersection of these rays at a point locates the image.

RAY DIAGRAMS FOR DIVERGING LENSES

1. ray 1 is drawn parallel to the principal axis and is refracted passing through the focal point.

2. ray 2 is drawn passing through the center of the lens.

3. ray 3 is drawn passing through the focal point and parallel to the principal axis.

The intersection of these rays at a point locates the image.

pHysics iN everYday lIfe ;

' 2:21 AM Y

rAy dIagrAms f0r mirr0rs '

Ray Diagrams are used so that we can determine conveniently the positions and sizes of images formed by mirrors. To make a ray diagram we should know the position of the object and the location of the center of curvature. To locate the image, three rays are constructed and these rays start from the same object point.

RAY DIAGRAMS FOR CONCAVE MIRRORS

1. ray 1 is drawn parallel to the principal axis and is reflected back through the focal point(F).

2. ray 2 is drawn through the focal point. thus, it is reflected parallel to the principal axis.

3. ray 3 is drawn through the center of curvature(C) and is reflected back on itself.

The intersection of these rays at a point locates the image.

RAY DIAGRAMS FOR CONVEX MIRRORS

1. ray 1 is drawn parallel to the principal axis but light but light will not pass through the mirror and so it is reflected and broken lines are drawn passing through the other focal point.

2.ray 2 is drawn through the focal point but again light will not pass through thus reflected parallel to the principal axis extending a broken line to the other side.

3. ray 3 is drawn passing through the other center of curvature.

The intersection of these rays at a point locates the image.

pHysics iN everYday lIfe ;