Douglas Adams

We are stuck with technology when what we really want is just stuff that works.

Albert Einstein

It has become appallingly obvious that our technology has exceeded our humanity.

Jose Manuel Rodriguez Delgado

Can you avoid knowledge? You cannot! Can you avoid technology? You cannot! Things are going to go ahead in spite of ethics, in spite of your personal beliefs, in spite of everything

Sergey Brin

Technology is an inherent democratizer. Because of the evolution of hardware and software, you’re able to scale up almost anything. It means that in our lifetime everyone may have tools of equal power.

Douglas Adams

Most of the time spent wrestling with technologies that don't quite work yet is just not worth it for end users, however much fun it is for nerds.

Friday, August 14, 2015

āļšුāļģුāˇ…ු āļ´ිāˇ„ාāļ§ුāˇ€āļšුāļēි āļŊෙāļ¯āļģ් āļļොāļŊāļšුāļēි āļ‘āļšāˇ€āļģ āļ‹āˇƒāļš āˇƒිāļ§ āļ…āļ­āˇ„ැāļģිāļēොāļ­් āļšāļŊිāļą් āļ´ොāļŊāˇ€āļ§ āˇ€ැāļ§ෙāļą්āļąේ āļšුāļ¸āļš්āļ¯ ?

āļšුāļģුāˇ…ු āļ´ිāˇ„ාāļ§ුāˇ€āļšුāļēි āļŊෙāļ¯āļģ් āļļොāļŊāļšුāļēි āļ‘āļšāˇ€āļģ āļ´ොāļŊāˇ€āļ§ āļ…āļ­āˇ„ැāļģිāļēොāļ­් āļ…āļ´ි āļ¯āļą්āļąāˇ€ා āļ¸ුāļŊිāļą් āļ´ොāļŊāˇ€āļ§ āˇ€ැāļ§ෙāļą්āļąේ āļŊෙāļ¯āļģ් āļļෝāļŊāļē āļšිāļēāļŊ, āļ‘āļ­් āļ¸ේ Video āļ‘āļš āļļැāļŊුāˇ€āļ¸ āļ…āļŊුāļ­ිāļą් āˇ„ිāļ­āļą්āļą āļ¯ේāˇ€āļŊ් āļ§ිāļšāļš් āļ‰āļ­ුāļģු āˇ€ේāˇ€ි.


āļ¸ේ āļ­ිāļēෙāļą්āļąේ NASA āļ†āļēāļ­āļąāļē āļ­ුāļŊ āļ­ිāļēāļą āļŊොāˇ€ āˇ€ිāˇාāļŊāļ¸ Thermal-Vacuum Test Chamber ( āˇ€ිāˇාāļŊāļ­āļ¸ āļģිāļš්āļ­āļš āļšුāļ§ීāļģāļē ). 1969 āļ¯ී āļ‹āˇƒිāļą් 37 m āˇƒāˇ„ 30 m āļ´āļģිāļ¯ිāļēāļšිāļą් āļēුāļ­ුāˇ€ āļģිāļš්āļ­āļšāļēāļš් āļ­ුāļŊ Nuclear Electric Power āļ´āļģීāļš්āˇ‚āļĢ āļšāļŊāļ­් āļ¯ැāļąāļ§ āļļාāˇ€ිāļ­ා āˇ€āļą්āļąේ āļ…āļļිāˇ€āļšාāˇāļē āļ­ුāļŊ āļ‡āļ­ි āļģිāļš්āļ­āļšāļēāļš් āļ­ුāļŊ āļēāļ¸්āļšිāˇƒි āļ¯ෙāļēāļš් āˇ„ැāˇƒිāļģෙāļą āļ†āļšාāļģāļē āˇƒොāļēා āļļැāļŊීāļ¸ āˇƒāˇ„. āļ…āļœāˇ„āļģු āˇ€ැāļąි āļœ්‍āļģāˇ„āļŊෝāļšāļēāļš āļ‡āļ­ි Atmospheric condition āļ‘āļš āļąිāļģ්āļ¸ාāļĢāļē āļšāļģ āļ´āļģ්āļēේāļš්āˇ‚āļĢ āļ´ැāˇ€ැāļ­්āˇ€ීāļ¸āļēි. 

āļ‹āˇƒāļš āˇƒිāļ§ āļļāļģිāļą් āˇ€ෙāļąāˇƒ් āˇ€āˇƒ්āļ­ුāļą් āļ¯ෙāļšāļš් āļ‘āļšāˇ€āļģ āļ´ොāļŊāˇ€āļ§ āļ…āļ­āˇ„āļģී āˇ€ිāļ§ āļ…āļ´ිāļ§ āļ´ෙāļąෙāļą්āļąේ āļļāļģ āˇ€ැāļŠි āˇ€āˇƒ්āļ­ුāˇ€ āļ¸ුāļŊිāļą් āļ´ොāļŊāˇ€āļ§ āˇ€ැāļ§ෙāļą āļļāˇ€āļē. āļ‘āˇƒේ āˇ€āļą්āļąේ āˇ€ාāļēුāļœෝāļŊāļē āļ¸āļœිāļą් āļ‡āļ­ි āļšāļģāļą āļ´්‍āļģāļ­ිāļģෝāļ¯āļē ( āļ‹āļŠුāļšුāļģු āļ­ෙāļģāļ´ුāļ¸ Buoyant Force ) āˇ„ේāļ­ුāˇ€ෙāļąි. āˇ€āˇƒ්āļ­ුāˇ€āļš් āļ´āˇ„āļ­āļ§ āļ´ාāˇ€ෙāļą්āļąේ āļœුāļģුāļ­්āˇ€ා āļšāļģ්āˇāļą āļļāļŊāļē āļąිāˇƒාāˇ€ෙāļąි.
G = 6.6726 x 10-11Nm2/kg2

āļ¸ෙāˇ„ි m1 āˇƒāˇ„ m2 āļēāļąු āļ´ොāļŊāˇ€ේ āˇƒāˇ„ āˇ€āˇƒ්āļ­ුāˇ€ේ āˇƒ්āļšāļą්āļ¯āļē. r āļēāļąු āˇ€āˇƒ්āļ­ු āļ¯ෙāļš āļ…āļ­āļģ āļ¯ුāļģ āˇ€ේ. F āļēāļąු āļœුāļģුāļ­්āˇ€ා āļšāļģ්āˇāļą āļļāļŊāļē āˇ€ේ. 

āˇ€āļ­ුāˇ€ේ āˇƒ්āļšāļą්āļ¯āļē āˇ€ෙāļąāˇƒ් āˇ€āļą āˇ€ිāļ§āļ§ āˇƒāļ¸ිāļšāļģāļĢāļ§ āļ…āļąුāˇ€ āļœුāļģුāļ­්āˇ€ාāļšāļģ්āˇ‚āļĢ āļļāļŊāļē āˇ€ෙāļąāˇƒ් āˇ€ෙāļąāˇ€ා āˇ€āļœේ āļ´ෙāļąුāļąāļ­් āļ´ොāļŊāˇ€ේ āļ‡āļ­ි āļ…āļ­ිāļ¸āˇ„āļ­් āˇƒ්āļšāļą්āļ¯āļē āļąිāˇƒා āļ‘āˇ„ි āļšිāˇƒිāļ¸ āˇƒැāļŊāļšිāļē āļēුāļ­ු āˇ€ෙāļąāˇƒāļš් āˇƒිāļ¯ු āļąොāˇ€ේ. āˇ€ිāˇේāˇ‚āļą්āļ¸ āļ´ොāļŊāˇ€ āļ†āˇƒāļą්āļąāļēේāļ¯ී āļ‡āļ­්āļ­ේ āļ‘āļšāļ¸ āļļāļŊāļēāļšි. 

āļ´āˇ„āļ­ āļ‡āļ­ි āļ āļŊිāļ­ āˇƒāļ¸ීāļšāļģāļĢāļē āļ…āļąුāˇ€āļ¸ āļ‘āļē āļ´ැāˇ„ැāļ¯ිāļŊි āˇ€ේ āļ‘āˇ„ි m ( āˇƒ්āļšāļą්āļ¯āļēāļš් āļ…āļŠංāļœු āļąොāˇ€ේ ). āļ¸ෙāļ¸ āˇƒāļ¸ීāļšāļģāļĢāļē āļ¸āļœිāļą් āˇ€āˇƒ්āļ­ුāˇ€āļš් āļ¯āļą්āļąා āļ‹āˇƒāļš āˇƒිāļ§ āļ´ොāļŊāˇ€āļ§ āˇ€ැāļ§ෙāļą්āļą āļēāļą āļšාāļŊāļē āļœāļĢāļąāļē āļšිāļģීāļ¸ āļ¸āļœිāļą් āļŊāļļා āļœāļ­ āˇ„ැāļš. ( a 9.81 m/s2 ) t āļēāļąු āļšාāļŊāļē āļ­āļ´්āļ´āļģ āˇ€āļŊිāļą්, āˇƒāˇ„ S āļēāļąු āˇ€āˇƒ්āļ­ුāˇ€ āļœāļ¸āļą් āļšāļģāļą āļ¯ුāļģ āˇ€ේ, U āļēāļąු āļ…āļģāļ¸්āļļāļš āļ´්‍āļģāˇ€ේāļœāļē āˇ€ේ.

S=ut+½at2

āļ¸ේ āˇƒේāļģāļ§āļ¸ āˇ„ේāļ­ුāˇ€ෙāļą Gravity (āļœුāļģුāļ­්āˇ€ා āļšāļģ්āˇ‚āļĢāļē) āļ…āļ´ි āļ´ාāˇƒāļŊේāļ¯ී āļ‰āļœāļą āļœāļąිāļ´ු āļ¯ේāˇ€āļŊ් āˇ€āļŊāļ§ āˇ€āļŠා āˇ€ැāļŠි āļ¯ෙāļēāļš්

āļ¸ේ āˇ€ිāˇ්āˇ€āļē āļ­ුāļŊ āļ´āˇ€āļ­ිāļą āļ¸ුāļŊිāļš āļļāļŊ āˇ„āļ­āļģෙāļą් āļ…āļŠුāļ¸ āļļāļŊāļē āļ‡āļ­්āļ­ේ āļœුāļģුāļ­්āˇ€ා āļšāļģ්āˇāļą්āļēāļ§ āˇ€ේ. 


  1. Strong force
  2. Electromagnetic force
  3. Weak force
  4. Gravitational force
āļœුāļģුāļ­්āˇ€ා āļšāļģ්āˇāļą්āļēāļ¯ āļš්‍āļģිāļēාāļ­්āļ¸āļš āˇ€āļą්āļąේ Electromagnetic force āļ‘āļš āˇ€āļœේ Gravity fieldāļ‘āļšāļš් āļŊෙāˇƒāļē. Electromagnetic wave āˇ€āļŊ āˇāļš්āļ­ිāļē āļœāļ¸āļą් āļšāļģāļą Proton āļ…ංāˇුāˇ€ āļ¸ෙāļą් āļ¸ෙāˇ„ිāļ¯ Graviton āļąāļ¸ිāļą් āˇ„āļ¯ුāļą්āˇ€āļą āļ…ංāˇුāˇ€āļš් āļ‡āļ­. āļąāļ¸ුāļ­් āļ¸ෙāļ¸ āļ…ංāˇුāˇ€ āļ­āˇ€āļ¸ āˇ€ිāļ¯්‍āļēාāļ­්āļ¸āļšāˇ€ āļ´ෙāļą්āļąāˇ€ා āļ¯ී āļąොāļ¸ැāļ­. 

Newton āļœේ āļœුāļģුāļ­්āˇ€ාāļšāļģ්āˇ‚āļĢ āļ­ිāļēāļģි āˇ€āļŊāļ§ āˇ€āļŠා āˇ€ැāļŠි āļēāļ¸āļš් Einstein's Theory of General Relativity āļ¸āļœිāļą් Albert Einstein āˇ€ිāˇƒ්āļ­āļģ āļšāļģāļąු āļšāļģāļą āļŊāļ¯ී.





Monday, August 3, 2015

Google Loon project in Sri Lanka āļļැāļŊුāļą් āļ¸āļœිāļą් āļŊංāļšාāˇ€āļ§āļ¸ Internet

Google Loon āļēāļąු Google āˇƒāļ¸ාāļœāļ¸ āˇ€ිāˇƒිāļą් 2013 āļ¯ී āļ´āļ¸āļĢ āļąāļœāļģ āˇ€āļŊිāļą් āļ¯ුāļģ āļļැāˇ„ැāļģ āļ´්‍āļģāļ¯ේāˇ āļ†āˇ€āļģāļĢāļē āˇ€āļą āļ´āļģිāļ¯ි āļ…āˇ„āˇƒāļ§ āļēāˇ€āļą Balloons āļ†āļ¯āļģāļēෙāļą් Internet āļŊāļļා āļ¯ීāļ¸āļ§ āļ¯ිāļēāļ­් āļšāļģāļą āļŊāļ¯ āˇ€ැāļŠāˇƒāļ§āˇ„āļąāļšි. āļ‘āļē āļ…āļ­්āˇ„āļ¯ා āļļැāļŊීāļ¸āļ§ āˇ්‍āļģී āļŊංāļšාāˇ€ āļ­ෝāļģාāļœෙāļą āˇƒිāļ§ීāļ¸ āļ‘āļš āļ…āļ­āļšිāļą් āˇƒāļ­ුāļ§ු āˇ€ිāļēāˇ„ැāļšි āļšාāļģāļĢāļēāļšි.

āļšāļ­āļą්āļ¯āļģ āļ…āļąāˇ€āˇ්‍āļē āļąāļ¸් āļ‡āļŊ āļ…āļšුāļģු āļąොāļšිāļēāˇ€āļą්āļą 

āļ¯ිāļēුāļĢු āļģāļ§āˇ€āļŊ් āˇƒිāļēāļŊුāļ¸ āļ…āļ­āˇ„āļ¯ා āļļැāļŊීāļ¸් āļšිāļģීāļ¸āļ§ āļ…āļ´ි āˇ€ැāļąි āļ­ුāļą්āˇ€ැāļąි āļŊෝāļšāļēේ āļģāļ§āˇ€āļŊ් āˇƒāˇ„ āļ¸ිāļąිāˇƒුāļą් āļ­ෝāļģා āļœāļąු āļŊāļļāļēි. āˇƒāļ¸āˇ„āļģ āļģෝāļœ āˇ€āļŊāļ§ āļļෙāļ­ෙāļ­් āļ…āļ­්āˇ„āļ¯ා āļļැāļŊීāļ¸ āˇƒāļŗāˇ„ා āļ‘āļ¸ āļģෝāļœ āļšāļģāļšāļēāļ¸ āļ¸ිāļąිāˇƒුāļąේāļœේ āļ‡āļœāļ§ āļ‡āļ­ුāļŊ් āļšāļģ āļ´āˇƒුāˇ€ āļ”āˇ€්āļą්āļ§ āļąොāļ¸ිāļŊේ āļļෙāˇ„ෙāļ­් āļšāļģāļą āļļāˇ€ āˇ„āļŸāˇ€ා āļ…āļ´්‍āļģිāļšාāļąු āļĸාāļ­ිāļšāļą් āļ´āļģීāļš්āˇ‚āļĢ āˇ€āļŊāļ§ āļļāļĸāļąāļē āļšāļģ āˇƒāļ¸āˇ„āļģුāļą්āļœේ āļĸීāˇ€āļ­් āˇ€ීāļ¸ේāļ¯ āļ…āļēිāļ­āļē āļąැāļ­ිāļšāļģ āļ…āļ¸ාāļąුāˇ‚ිāļš āļŊෙāˇ‚ āļŊෝāļšāļēාāļ§ āļ‰āļ­ාāļ¸ āļĸāļąāļ´්‍āļģිāļē āˇƒāˇ„ āļ´්‍āļģāļ āļŊිāļ­ āļļෙāˇ„ෙāļ­āļš්āļ¯ āˇ„āļ¯ුāļą්āˇ€ා āļ¯ී āļ‡āļ­. āļ‘āļ¸ āļĸāļąāļ´්‍āļģිāļē āļļෙāˇ„ෙāļ­ āļąිāˇƒා āļ…āļ¯ āļ…āļ´ි āļ´්‍āļģāļ­ිāļŊාāļļ āļŊැāļļුāˇ€āļ­් āļ‘āˇ„ි āļ‰āļ­ාāļ¸ āļ¯ුāļš්āļļāļģ āļšāļ­ාāˇ€āļš් āļ…āļą්āļ­āļģ්āļœāļ­ āˇ€ී āļ‡āļ­. āˇƒāļ¸āˇ„āļģ āˇ€ිāļ§ āļ”āļļ āļ‘āļ¸ āļšāļ­ාāˇ€ āļ¯āļą්āļąāˇ€āļ­් āļ‡āļ­ි āļąුāļ¸āļ­් āļąොāļ¯āļą්āļąා āļ…āļēāļ§ āļ‘āļ¸ āļļෙāˇ„ෙāļ­ āļšුāļ¸āļš්āļ¯ැāļēි āļšීāļ¸āļ§ āļ¸āļ¸ āļšැāļ¸āļ­ි āļąැāļ­, āˇƒāļ¸āˇ„āļģ āˇ€ිāļ§ āļ”āļļāļ§ āļ‘āļ¸ āļ…āˇƒāļąීāļ´āļēāļšāļ§ āļ‘āļ¸ āļļෙāˇ„ෙāļ­ āļŊāļļා āļœāļą්āļąා āˇ€ිāļ§ āļ‘āļ¸ āļ…āļ¸ිāˇ„ිāļģි āļ¯ුāļš්āļļāļģ āļšāļ­ාāˇ€ āļ”āļļāļ§ āļ¸āļ­āļš් āˇ€āļąු āļ‡āļ­.

Google Loon āļ­ාāļš්āˇ‚āļąāļē 2013 āļ¯ී  New Zealand āˇ€āļŊ āļ…āļ­්āˇ„āļ¯ා āļļැāļŊීāļ¸āļ§ āļœොāˇƒ් āļļāļŊුāļąāļš් āļļිāļ¸āļ§ āļ´āļ­ිāļ­ āˇ€āļą āˇ€ිāļ§ āļ‘āļē āļœුāˇ€āļą්āļēāļąāļš් āļšāļŠා āˇ€ැāļ§ෙāļą āļļāˇ€ āˇ€āļ§āˇ„ාāļœෙāļą  New Zealand āļģāļĸāļē Emergency  Rescue Helicopter āļ‘āļšāļš් āļ´āˇ€ා āļ‘āļ¸ āˇƒ්āļŽාāļąāļēāļ§ āļēāˇ€ා āˇ€ිāˇාāļŊ āļ´්‍āļģāˇ්āļąāļēāļšāļ§ Google āˇƒāļ¸ාāļœāļ¸ āļ¸ුāˇ„ුāļĢ āļ¯ුāļą් āļ…āļ­āļģ USA āˇ€āļŊāļ¯ āļ…āļ¯ිāļļāļŊ āˇ€ිāļ¯ුāļŊි āļģāˇ„āļąāļšāļ§ āļļāļŊුāļąāļš් āļ´āļ­ිāļ­ āˇ€ීāļ¸ෙāļą් āļ‘āˇ„ිāļ¯ āļœැāļ§āˇ…ුāˇ€āļš් āļ¸āļ­ු āˇ€ිāļē. āļ¸ේ āˇƒිāļēāļŊුāļ¸ āļœැāļ§āˇ…ු āˇ€āļŊāļ§ āˇ€ිāˇƒāļ¯ුāļ¸ āļ…āļ´ි āˇ€ැāļąි āļ­ුāˇ€āļąි āļŊෝāļšāļēේ āļģāļ§āˇ€āļŊ්āļē. āļ…āļąිāļ­් āļšāļģුāļĢ āļąāļ¸් āļšිāˇƒිāˇƒේāļ­් āļąොāļ¸ිāļŊāļēේ āļąāļ¸් āļ‰āļą්āļ§ෙāļģ්āļąෙāļ§් āļąොāļŊැāļļෙāļąු āļ‡āļ­ āļ…āļąිāˇ€ාāļģ්āļēෙāļą්āļ¸ āļŊංāļšාāˇ€ේ Internet Service Provider āļš් āļ¸ේ āˇƒāļŗāˇ„ා Google āļ†āļēāļ­āļąāļē āļ…āļąිāˇ€ාāļģ්āļēෙāļą්āļ¸ āļ‘āļšāļ­ු āļšāļģ āļœāļą්āļąāˇ€ා āļ‡āļ­. 

āļ­āˇ€āļ¯ āļ¸ෙāļ¸ āļļැāļŊුāļą් āļģāļ¯āˇ€āļą්āļąේ āļœුāˇ€āļą්āļēාāļąා āļœāļ¸āļą් āļœāļą්āļąා āļ‹āˇƒāļ§ āˇ€āļŠා āˇ€ැāļŠි āļ‹āˇƒāļšිāļą් āļ‹āˇ€āļ¯ āļ¸ේāˇ€ා āļ…āļ­්āˇ„āļ¯ා āļļැāļŊීāļ¸ āˇƒāļŗāˇ„ා āļœුāˇ€āļą්āļœāļ­ āļšāļģāļą āˇ€ිāļ§ āˇƒāˇ„ āļąāļŠāļ­්āļ­ුāˇ€ āˇƒāļŗāˇ„ා āļąැāˇ€āļ­āļ­් āļ´ෘāļ­ුāˇ€ිāļēāļ§ āļœෙāļą āļ‘āļą āˇ€ිāļ§, Radarāļ´āļ¯්āļ¯āļ­ි āˇ€āļŊāļ§ āļ…āļąāˇ€āˇ්‍āļē āˇ€āˇƒ්āļ­ුāļą් āļ¯āļģ්āˇāļąāļē āˇ€ේ. 

āļ¸ෙāˇ„ිāļ¯ී āˇƒිāļ¯ුāļšāļģāļąු āļŊāļļāļą්āļąේ 15 m āļ´āļ¸āļĢ āˇ€ිāˇ‚්āļšāļ¸්āļļāļēāļšිāļą් āļēුāļ­ු āļļāļŊුāļąāļšāļš් āļ…āļ´āˇ€āļģ්āļ­ි āļœෝāļŊāļē (Stratosphere) āļ­ුāļŊ 20 km āļ…āˇƒāļą්āļą āļ¯ුāļģāļšිāļą් āļģāļŗāˇ€ා āļ‘āˇ„ි āˇƒāˇ€ිāļšāļģ āļ‡āļ­ි LTE ( 4 G ) Transmitter āļ¸āļœිāļą් āļ…āļą්āļ­āļģ්āļĸාāļŊ āļ´āˇ„āˇƒුāļšāļ¸් āļŊāļļා āļ¯ීāļ¸āļēි. āļ¸ේ āļ†āļšාāļģāļēāļ§ āˇ€ිāˇාāļŊ āļļැāļŊුāļą් āļ´්‍āļģāļ¸ාāļĢāļš් āļœුāˇ€āļą්āļœāļ­ āļšāļģ āˇƒāļēිāļ¯්‍āļēාāļą්āļ­ිāļšāˇ€ āļ¸ුāˇ…ු āļ´ෘāļ­ුāˇ€ිāļēāļ¸ āļ†āˇ€āļģāļĢāļē āļšāļŊ āˇ„ැāļš.

āļ…āļ´āˇ€āļģ්āļ­ි āļœෝāļŊāļē (Stratosphere) āļ­ුāļŊ āļ‡āļ­ි āļ…āļŠු āļ´ීāļŠāļą āˇ€ාāļēු āļ‰āˇƒāļ­්āļģ āļ‘āļšිāļąāļšāļ§ āˇ€ෙāļąāˇƒ් āļ¯ිāˇා āˇ€āļŊāļ§ āˇƒෙāļ¸ිāļą් āļœāļ¸āļą් āļœāļą්āļąා āļąිāˇƒා āļ¸ෙāļ¸ Balloon āļ…āˇ€āˇ්‍āļē āļ‰āˇƒ්āļ­āļģāˇ€āļŊ āļąිāļēāļ¸ිāļ­ āļ‹āˇƒāļ§ āˇƒāˇ„ āļąිāļēāļ¸ිāļ­ āļ¯ුāļģāļš āļģැāļ¯āˇ€ිāļēāļš āˇ„ැāļš. āļ¸ේ āˇƒāļŗāˇ„ා Google X Team āļ‘āļš āļ¸ෙāļ¸ Helium āļ´ිāļģāˇ€ූ āļļැāļŊූāļą් āˇ€āļŊāļ§ Air Pump āļ‘āļšāļš් āļļාāˇ€ිāļ­ා āļšāļģāļąු āļŊැāļļේ. āļ¸ෙāļ¸ āļ‘āļš āļļැāļŊුāļąāļēāļš් āļ†āˇƒāļą්āļąāˇ€ āļ¯ිāļą 100 āļš āļšාāļŊāļēāļš් āļœුāˇ€āļąේ āļ­ැāļļිāļē āˇ„ැāļšි āˇ€āļą āļ´āļģāļ¯ී āˇƒුāˇ€ිāˇේāˇ‚ Polyethylene Plastic āˇ€āļŊිāļą් āļąිāļ´āļ¯āˇ€ා āļ‡āļ­. āļ¸ෙāļ¸ āļļැāļŊුāļą āļ´āˇ€āļ­ිāļą āˇƒ්āļŽාāļą āˇƒāˇ„ āļ’āˇ€ා āļœුāˇ€āļą්āļœāļ­ āļšāļŊ āļ‡āļ­ි āļšාāļŊāļē āˇƒāˇ„ āļ’āˇ€ා āļąැāˇ€āļ­ āļ´āˇ„āļŊāļ§ āļœෙāļą්āˇ€ා āļœැāļąීāļ¸ āļēāļą āˇƒිāļēāļŊුāļ¸ āļ¯ේ āļ´ොāļŊāˇ€ āļ­ුāļŊ āļ‡āļ­ි āļ´ාāļŊāļš āļ¸ැāļ¯ිāļģිāļēāļšිāļą් āļ´ාāļŊāļąāļē āļšāļŊ āˇ„ැāļš. āļļැāļŊුāļą āļœāļ¸āļą් āļšāļģāļą āˇ€ේāļœāļē āˇƒāˇ„ āļ‹āˇƒ āļ¯ැāļąāļœැāļąීāļ¸āļ§ GPS āļ­ාāļš්āˇ‚āļąāļē āļēොāļ¯ාāļœāļ­ āˇ„ැāļš. āļ¸ෙāļ¸ āļļැāļŊූāļą් āˇ€āļŊ āˇ€ැāļŠි āļ¯ිāļēුāļĢු āļšāļŊ Solar Cell ( Approximately 100 w ) āļ´āļ¯්āļ¯āļ­ිāļēāļš් āˇƒāˇ„ āļģාāļ­්‍āļģිāļēāļ§ āˇ€ිāļ¯ුāļŊිāļē āļŊāļļා āļœැāļąීāļ¸āļ§ Battery Bank āļ‘āļšāļš් āļ‡āļ­. 

āˇ€āļģ්āļ­āļ¸āļąāļēේ āļ´āˇ€āļ­ිāļą Telecommunication āļ¯ිāļēුāļĢුāˇ€āļ­් āˇƒāļ¸āļœ āļ¸ේ āļļැāļŊූāļą් āļ¸āļœිāļą් āļ…āļą්āļ­āļģ්āļĸාāļŊ āļ´āˇ„āˇƒුāļšāļ¸් ( Radio waves ) āļ´ොāļŊāˇ€āļ§ āļŊāļļා āļ¯ීāļ¸ āļšිāˇƒුāļ¯ු āļœැāļ§āˇ…ුāˇ€āļš් āļąැāļ­, Google āļŊāļ§ āļ…āļ´ේ āļģāļ§ āļ­ෝāļģාāļœෙāļą āļšāļģāļą්āļą āļ…āˇ€āˇ්‍āļē āˇ€ී āļ­ිāļļෙāļą්āļąේ  āļ¸ේ āļļැāļŊුāļą් āļļෝāļŊ āˇ€āļŊ āļš්‍āļģිāļēාāļšාāļģිāļ­්āˇ€āļē āļ´āļģිāļš්āˇ‚ා āļšāļģ āˇ€ැāļŠි āļ¯ිāļēුāļĢු āļšāļģ āļœැāļąීāļ¸ āļ¸ිāˇƒ āļ…āļ´ිāļ§ āļ‰āļą්āļ§āļąෙāļ§් āļ¯ීāļ¸ āļąොāˇ€ේ.

Google āļ†āļēāļ­āļąāļē LTE āļ¸āļœිāļą් ( 3 G āˇ„ෝ WiFi āˇ„ෝ āļ•āļąෑāļ¸ āļ¯ෙāļēāļš් āļ‹āˇ€āļ¯ āļļාāˇ€ිāļ­ා āļšāļŊ āˇ„ැāļš ) āļ´ෘāļ­ුāˇ€ිāļēේ 40 km āˇ€āļœේ āˇ€ිāˇ‚්āļšāļ¸්āļļāļēāļš් āļ†āˇ€āļģāļĢāļē āļšිāļģීāļ¸āļ§ āļļāļŊාāļ´ොāļģාāļ­්āļ­ු āˇ€ේ. āļąāļ¸ුāļ­් āļ¸āļœේ āļ¯ැāļąුāļ¸ේ āˇ„ැāļ§ිāļēāļ§ āļąāļ¸් āļ¸ේ āˇƒāļŗāˇ„ා āļ…āļ´ි āļļාāˇ€ිāļ­ා āļšāļģāļą Smart Phone āļąāļ¸් āļ¸ෙāļ­āļģāļ¸් āļ¯ුāļģāļš් Data Transmit āļąොāļšāļģāļąු āļ‡āļ­. āļ’ āˇƒāļŗāˇ„ා āļ…āļŊුāļ­ිāļą් āļ‹āļ´āļšāļģāļĢ āļąිāļ´āļ¯ිāļē āļēුāļ­ුāˇ€ේ.

āļ¯āļą් āļļāļŊāļ¸ු āļ¸ොāļšāļ¯ āļ¸ේ Google āļ…āļ´ිāļ§ āļąිāļ…āļšāļą් Internet āļ¯ෙāļą්āļą āļ¸āˇ„āļą්āˇƒි āˇ€ෙāļą්āļąේ āļ‡āļēි āļšිāļēāļŊ, āļ¸ෙāļēාāļŊāļœේ āļ´්‍āļģāļ¯ාāļą āļ…āļ¯ාāļēāļ¸් āļ¸ාāļģ්āļœāļē āˇ€āļą්āļąේ Google add. āļ¸ෙāļēාāļŊāļ§ Google add āˇ€āļŊිāļą් āļ‹āļ´āļģිāļ¸ āļŊාāļļāļēāļš් āļŊāļļා āļœැāļąීāļ¸āļ§ āļąāļ¸් āļ…āļą්āļ­āļģ්āļĸාāļŊ āˇƒāļ¸්āļļāļą්āļ¯āļ­ාāˇ€āļē āļ´ුāˇ…ුāļŊ් āļšāļŊ āļēුāļ­ු āˇ€ේ. āļ¯ැāļąāļ§āļ¸āļ­් Google Fiber āļ¸āļœිāļą් āļ‡āļ¸āļģිāļšාāˇ€āļ§ Basic Fiber Package āļ‘āļš āļ¸ාāˇƒිāļš āļœාāˇƒ්āļ­ුāˇ€āļš් āļģāˇ„ිāļ­āˇ€āļ¸ āļŊāļļා āļ¯ේ.








Sunday, July 19, 2015

How can transmit Ethernet Data over 100 m / 209 m Cat 6 ware āļ‘āļšāļšිāļą් WiFi Router āļ‘āļšāļš් up āļšāļģāļœāļ­් āļ†āļšාāļģāļē

100 Mbps Ethernet āˇ€āļŊ āļļාāˇ€ිāļ­ා āļšāļģāļą්āļąේ Transmitting and Receiving āˇ€āļŊāļ§ Cat 6 Cable āļ‘āļšේ āļ‡āļ­ි ware āˇ„āļ­āļģāļš් āļ´āļ¸āļĢි. āļ‘āļąāļ¸් Pin 1 āˇƒāˇ„ 2 Transmit āˇƒāļŗāˇ„ාāļ¯ Pin 3 āˇƒāˇ„ 6 Receive āļ¯ āļļාāˇ€ිāļ­ා āļšāļģāļēි āļ…āļąිāļ­් ware āˇ„āļ­āļģāļ¸ āļļāˇ€ිāļ­āļēāļš් āˇƒිāļ¯ු āļąොāˇ€ෙāļēි. āˇƒāļģāļŊāˇ€ āļšිāļēāļąāˇ€ා āļąāļ¸් Pair āļ¯ෙāļšāļšිāļą් āļ¸ෙāļ¸ āˇ€ැāļŠේ āļšāļģāļœāļą්āļą āļ´ුāˇ…ුāˇ€āļą්. āļąāļ¸ුāļ­් āļ¸ෙāļē 100 Mbps Ethernet āˇ€āļŊāļ§ āļ´āļ¸āļĢāļš් āļļāˇ€ āļ¸āļ­āļš āļ­āļļා āļœāļą්āļą Gigabit Ethernet āˇ„ෝ Power over Ethernet āˇƒāļŗāˇ„ා āļ‰āļ­ුāļģු pair āļ¯ āļ…āˇ€āˇ්‍āļē āˇ€ේ. 

100 m āˇ€āļŠා āˇ€ැāļŠිāļąāļ¸් āļ‘āļš āļ¯ෙāļēāļš් āļšāļģāļą්āļą āļ´ුāˇ…ුāˇ€āļą් āˇƒāļģāļŊāˇ€ āļ†āˇƒāļą්āļąāˇ€ 100 m āˇ€ෙāļą්āļą āļ¸ැāļ¯āļ§ Ethernet Switch āļ¯ාāļą්āļą āļ´ුāˇ…ුāˇ€āļą්. āļąāļ¸ුāļ­් āļ¸āļ§ āļ¸ේ āˇƒāļŗāˇ„ා āˇ€ිāļ¯ුāļŊිāļē āļŊාāļļා āļœැāļąීāļ¸āļ§ āˇƒ්āļŽාāļąāļēāļš් āļąොāļ¸ැāļ­ි āˇ€ීāļ¸ āļąිāˇƒා. āļ‰āļ­ුāļģු Pair āļ¯ෙāļšෙāļą් āˇ€ැāļŠāļš් āļ…āļģāļœāļ­්āļ­ා. āļ‘āļ¸ pair āļ¯ෙāļš āˇ„āļģāˇ„ා 230 V AC āˇ€ිāļ¯ුāļŊිāļē āļ´āˇ„āļ­ āļģුāļ´āļēේ āļ…āļšāļģāļ§ āļēāˇ€āļŊ āļ¸ැāļ¯ āļ§ āļēොāļ¯ා āļ­ිāļļුāļą WiFi Router āļ‘āļšේ Power Adapter āˇ€ිāļ¯ුāļŊිāļē āļŊāļļා āļ¯ී Bridge mode āļŊෙāˇƒ configure āļšāļģ wireless Disable āļšāˇ…ා.

āļ¯āļą් āļ´්‍āļģāˇ්āļą āļ¯ෙāļšāļš් āļ‘āļąāˇ€ා āļ‡āļ­ි āļąේāļ¯ āļ¸ොāļšāļ¯ AC Current āļ‘āļš āļēāˇ€āļą්āļąේ āļąැāļ­ුāˇ€ Power Adapter āļ‘āļš āļąිāˇ€ාāˇƒ āļ­ුāļŊ āˇƒāˇ€ිāļšāļģ Cat 6 cable āļ‘āļš āˇ„āļģāˇ„ා DC Current āļ‘āļš āļēැāˇ€්āˇ€ේ āļąැāļ­්āļ­ේ āļ‡āļēි āļšිāļēāļŊ, DC Current āļąිāˇƒා Interference āļ‡āļ­ිāˇ€ෙāļąේāļą්āļ­් āļąැāˇ„ැāļąේ. āļ‘āļ­් āļ¸āļ¸ āļ‘āˇ„ෙāļ¸ āļšāļŊේ āļąැāˇ„ැ āļ¸ොāļšāļ¯ āˇƒāļģāļŊ V=IR āˇƒāļ¸ිāļšāļģāļĢāļē āļ¸āļœිāļą් āļ´ැāˇ„ැāļ¯ිāļŊි āˇ€ෙāļąāˇ€ා āļ¸ේ āˇ€āļœේ āˇƒිāˇ„ිāļą් āˇ€āļēāļģāļš් āļ¸āļœිāļą් āļ­āļģāļ¸āļš් āļŊොāļšු āļ¯āļģාāˇ€āļš් āļēāˇ€āļą āˇ€ිāļ§ āļ…āˇ€āˇ්‍āļē Voltage āļ‘āļš Router āļ‘āļšāļ§ āļŊāļļා āļœැāļąීāļ¸āļ§ āļąොāˇ„ැāļšිāļļāˇ€ āļ¸āļ¸ āļ¯ැāļąāļœෙāļą āˇ„ිāļ§ිāļē āļąිāˇƒා, āļ‘āļš āļ´ාāļģෙāļą්āļ¸ āˇ€ැāļŠේ āļšāļģāļŊ āļ¯ැāļą්āļ¸.

Cat 6 ware āļ‘āļšේ āļ¸ AC current āļ‘āļš āļ…āļģāļœෙāļą āļēāļąāˇ€ිāļ§ Data āˇ€āļŊāļ§ Interference āļ‡āļ­ිāˇ€ෙāļąāˇ€ා āļšිāļēāļą āļ‘āļš. āļ”āļē āˇ€āļœේ āļ´ොāļŠි āˇ€ැāļŠ āˇ€āļŊāļ§ āļ¸āˇ„āļŊොāļšු āļ­ිāļēāļģි āˇ„ිāļ­āļą්āļąේ āļąැāļ­ුāˇ€ āļ­āļ¸ා āļ¸āļ¸ āļąāļ¸් āˇ„ැāļ¸āļ¯ාāļ¸ āˇ€ැāļŠ āļšāļģāļą්āļąේ. āļšිāˇƒි āļ…āˇ€්āļŊāļš් āļąැāļ­ුāˇ€ āˇ„ොāļ¯āļ§ Internet āļąāļ¸් āˇ€ැāļŠāļšāļģāļąāˇ€ āļ­āˇ€āļ¸. 





Saturday, June 20, 2015

Samsun āļļැāļ§āļģිāļēේ āˇƒ්āļ§ිāļšāļģāļēේ āļ‡āļ­්āļ­ āļšāļ­ාāˇ€ NFC ( Near field communication )

āļ…āļ¯ āļ¸āļ¸ āļ¯ැāļš්āļš FB āļ‘āļšේ Samsun Phone āļ‘āļšේ āļļැāļ§්āļģිāļē āļ´ිāļ§ිāļ´āˇƒ්āˇƒේ āļ‡āļ­ි āļšāļŊුāļ´ාāļ§ āˇƒ්āļ§ිāļšāļģ āļ‘āļš āļœāļŊāˇ€āļŊ āļ¯ාāļą්āļą āļšිāļēāļą āˇ€ීāļŠිāļēෝ āļ‘āļšāļš්. āļ‘āļēා āļšිāļēāļą්āļąේ āļ‘āļš āļ­ිāļēāļą āļąිāˇƒා āļ…āļ´ේ phone āļ‘āļšේ āļ­ිāļēāļą Data Samsun āˇƒāļ¸ාāļœāļ¸ āļ…āļģāļœāļą්āļąāˇ€ා āļšිāļēāļŊ. āļ‘āļ­් āļ‰āļ­ිāļą් āļ…āļ´‍ phone āˇ€āļŊ āļ­ිāļēāļą āļ¯ේāˇ€āļŊ් āļ…āļģāļœෙāļą Samsun āļ‘āļšේ servers āˇ€āļŊ āļ‰āļŠ āļ…āļŠු āļšāļģāļœāļą්āļą āļąāļ¸් āļ‹āļą්āļ§ āļ´ිāˇƒ්āˇƒු āļąැāˇ„ැ. āļ‘āˇ„ෙāļ¸ āļ´ිāˇƒ්āˇƒුāˇ€āļš් āļ­ිāļļුāļą āļąāļ¸් āļ‘āļēාāļŊāļ§ Phone āˇ„āļ¯āļą්āļą āˇ„āļ¸්āļļ āˇ€ෙāļą්āļąේ āļąැāˇ„ැ.

NFC ( Near field communication )
āļ¸ේ āļļැāļ§āļģිāļē āļ´ිāļ§ිāļ´āˇƒ්āˇƒේ āļ­ිāļēෙāļą්āļąේ āļ…āļą්āļ§āļą්āļąා āļ‘āļšāļš් āļ‘āļšෙāļą් āļšāļģāļą්āļąේ NFC āļšිāļēāļą āļ­ාāļš්āˇ‚āļąāļē āˇ„āļģāˇ„ා Device āļ¯ෙāļšāļš් āļ…āļ­āļģ āļ­්āļģāļ­ුāļģු āˇ„ුāˇ€āļ¸ාāļģු āļšāļģ āļœāļą්āļąāˇ€ා. photo āļ‘āļšāļš් āˇ„ුāˇ€āļ¸ාāļģු āļšිāļģීāļ¸ේ āˇƒිāļ§ āˇ€ිāˇේāˇ‚āļą්āļ¸ āļļාāļą්āļŠ āļ¸ිāļŊāļ¯ීāļœෙāļą āļ¸ුāļ¯āļŊ් āļœෙāˇ€ීāļ¸ āˇ€ැāļąි āļ¯ේāˇ€āļŊ්, āļ¸ෙāļ¸ NFC āļ­ාāļš්āˇ‚āļąāļē āˇ„āļģāˇ„ා Data Transmit āļšāļģāļą්āļą āļ´ුāˇ…ුāˇ€āļą් 10 cm āˇ€āļŊāļ§āļ­් āˇ€āļŠා āļ…āļŠු āļ¯ුāļģ āļ´්‍āļģāļ¸ාāļĢāļēāļš්. āļ‘āļ¸ āļąිāˇƒා āļ‹āļ´āļģිāļ¸ āļ¯ුāļģāļš් Data Transmit āļšāļģāļą්āļą āļ‘āļēාāļŊ āļ…āļą්āļ§āļą්āļąා āļ‘āļš battery āļ‘āļš āļ´ිāļ§ුāļ´āˇƒ āļ…āļŊāˇ€ා mother board āļ‘āļšāļ§ āˇƒāˇ€ි āļšāļģ āļ­ිāļļෙāļąāˇ€ා. āļ•āļš āļ­āļ¸ා āļ”āļē Samsun phone āļ‘āļšේ āˇƒ්āļ§ිāļšāļģේ āļšāļ­ාāˇ€. āļ´āˇ„āļ­ āļŊිāļą්āļš් āˇ€āļŊිāļą් āˇ€ැāļŠිāļ¯ුāļģ āļ­ොāļģāļ­ුāļģු āļļāļŊා āļœāļą්āļą āļ´ුāˇ…ුāˇ€āļą්. Play Store āļ‘āļšāļ§ āļœිāˇ„ිāļŊ්āļŊ āļļāļŊāļą්āļą NFC āļšිāļēāļŊ Type āļšāļģāļŊ āļ”āļēාāļŊāļ§āļ¸ āļļāļŊාāļœāļą්āļą āļ´ුāˇ…ුāˇ€āļą් āļ¸ේ āˇƒāļ¸්āļļāļą්āļ¯ app āļšොāļ´āļ¸āļĢ āļ­ිāļēāļąāˇ€āļ¯ āļšිāļēāļŊ.

āļ…āļą්āļ­ිāļ¸āļ§ āļšිāļēāļą්āļą āļ­ිāļēෙāļą්āļąේ FB āˇ€āļŊāļ§ āļ•āļąෑāļ¸ āļšෙāļąෙāļšුāļ§ āļ•āļąෑāļ¸ āļļොāļģුāˇ€āļš් āļ¯ාāļą්āļą āļ´ුāˇ…ුāˇ€āļą් āļ‘āļ­් āļ…āļ´ි āļ’āˇ€ා āļ’ āˇ€ිāļ¯ිāļēāļ§āļ¸ āļ´ිāˇ…ිāļœāļą්āļą āļœිāļēොāļ­් āļ…āļ´ිāļ­් āļŠāļ§ āˇ€āļŠා āļ¸ෝāļŠāļēෝ āˇ€ෙāļą āļļāˇ€ āļ¸āļ­āļš āļ­ිāļēා āļœāļą්āļą.
 


Thursday, June 4, 2015

why sky is Blue āļ¸ොāļšāļ¯ āļ…āˇ„āˇƒ āļ¯āˇ€ාāļŊāļ§ āļąිāļŊ් āļ´ාāļ§āļ§ āļ´ෙāļąෙāļą්āļąේ

Rayleigh Scattering āļšිāļēāļą āˇƒංāˇƒිāļ¯්āļ¯ිāļē āļąිāˇƒා āļ­āļ¸ා āļ…āˇ„āˇƒ āļąිāļŊ් āļ´ාāļ§āļ§ āļ…āļ´āļ§ āļ´ෙāļąෙāļą්āļąේ. āļ’āˇ€āļœේāļ¸ āļ‰āļģ āļļැāˇƒāļœෙāļą āļēāļą āˇ€ෙāļŊාāˇ€āļ§ āļ…āˇ„āˇƒ āļģāļ­ු āļ´ාāļ§āļ§ āļ´ෙāļąේāļąෙāļ­් āļ¸ෙāļ¸ Scattering āļšිāļēāļą āˇƒංāˇƒිāļ¯්āļ¯ිāļē āˇ„ේāļ­ුāˇ€ෙāļą්. āļ…āļ´ි āļ¯āļą්āļąāˇ€ා āˇƒුāļ¯ු āļ†āļŊෝāļšāļē āļ´āˇ€āļ­ිāļą්āļąේ āļ¸ුāļŊිāļš āˇ€āļģāļĢ āˇ„āļēāļš āļ‘āļšāļ­ුāˇ€āļšිāļą් āļšිāļēāļŊ. āļ¸ෙāļ¸ āļ†āļŊෝāļšāļēේ Blue āˇƒāˇ„ Violet āļ†āļŊෝāļšāļē Scattering āˇ€ීāļ¸ āļąිāˇƒා āļ­āļ¸ා āļ…āļ´ිāļ§ āļ¸ෙāļ¸ āˇ€āļģ්āļĢ āˇ€ෙāļąāˇƒ āļ¯ැāļš āļœāļ­ āˇ„ැāļšි āˇ€ෙāļą්āļąේ.

Visible Light spectrum
ColorWave lengthFrequencyPhoton energy
Violet380–450 nm668–789 THz2.75–3.26 eV
Blue450–495 nm606–668 THz2.50–2.75 eV
Green495–570 nm526–606 THz2.17–2.50 eV
Yellow570–590 nm508–526 THz2.10–2.17 eV
Orange590–620 nm484–508 THz2.00–2.10 eV
Red620–750 nm400–484 THz1.65–2.00 eV
āļ†āļŊෝāļšāļē āļēāļąු āˇ€ිāļ¯්‍āļēුāļ­් āļ ුāļ¸්āļļāļš āļ­āļģංāļœ āļšොāļ§āˇƒāļšි āļ‘āˇ„ි āļ…āļŠුāļ¸ Wave length āļ‘āļšāļš් āļ‡āļ­්āļ­ේ Violet āļ†āļŊෝāļšāļēāļ§āļē āļŠāˇ…āļœāļ§ āļ…āļŠුāļ¸  Wave length āļ‘āļšāļš් āļ‡āļ­්āļ­ේ Blue āļ†āļŊෝāļšāļēāļ§āļē. āˇ€ැāļŠිāļ¸ Wave length āļ‘āļšāļš් āļ‡āļ­්āļ­ේ Red āļ†āļŊෝāļšāļēāļ§āļē.

Scattering
Scattering āļēāļąු āļ­āļģංāļœāļēāļš āļ­āļģංāļœ āļ†āļēāļ¸āļēāļ§ āˇ€āļŠා āļšුāļŠා āˇ€āˇƒ්āļ­ුāˇ€āļš āļœැāļ§ුāļĢු āļšāļŊ āļ‘āļē āˇ€ිāˇƒිāļģි āļēāļ¸āļē. āļ’ āļšිāļēāļą්āļąේ āļœāļ¸āļą් āļ¸ාāļģ්āļœāļē āˇ€ෙāļąāˇƒ් āļšāļģ āļšිāˇƒිāļēāļ¸් āļ¯ිāˇාāˇ€āļšāļ§ āļœāļ¸āļą් āļšිāļģීāļ¸āļē.

why sky is Blue in day time
āˇƒුāļ¯ු āļ†āļŊෝāļšāļēේ āļ‡āļ­ි āļąිāļŊ් āˇƒāˇ„ Violet āļ­āļģංāļœ āļ†āļēාāļ¸āļē āļ…āļēāļą āļœෝāļŊāļēේ āļ‡āļ­ි āˇ€ාāļēු āļ…āļąු āˇ€āļŊ āļ´්‍āļģāļ¸ාāļĢāļēāļ§ āˇ€āļŠා āļšුāļŠා āļąිāˇƒා Scattering āˇ€ී. āļ…āˇ„āˇƒේ āˇƒිāļēāļŊුāļ¸ āļ¯ිāˇා āˇ€āļŊිāļą් āļ…āļ´āļœේ āļ‡āˇƒāļ§් āļŊා āļąිāļŊ් āļĩāļēāļ§ āˇ„ුāļģු āļ†āļŊෝāļšāļē āļ…āļ´āļœේ āļ‡āˇƒāļ§ āļ´ැāļ¸ිāļĢේ āļ‘āļē āļąිāļŊ් āˇƒāˇ„ Violet āļ†āļŊෝāļš āˇ€āļŊ āˇƒංāļšāļŊāļąāļēāļšි. āˇ€ැāļŠිāļ´ුāļģ āļ­ේāļģුāļ¸් āļœැāļąීāļ¸ āˇƒāļŗāˇ„ා āļ´āˇ„āļ­ āļ´ිāļą්āļ­ුāļģāļē āˇƒāˇ„ āˇ€ීāļŠිāļēෝāˇ€ āļąāļģāļļāļą්āļą.

why sky is red in sunset time
āļ‰āļģ āļļැāˇƒāļēāļą āˇ€ෙāļŊාāˇ€āļ§ āļ‰āļģ āļ´ෘāļ­ුāˇ€ිāļēāļ§ āˇƒāļ¸ාāļą්āļ­āļģāˇ€ āˇ€āļœේ āļ­ිāļēāļą āļąිāˇƒා āļ†āļŊෝāļšāļē āˇ€ැāļŠි āļ¯ුāļģāļš් āļ…āļēāļą āļœෝāļŊāļē āˇ„āļģāˇ„ා āļ´ැāļ¸ිāļĢෙāļą āļąිāˇƒා āļąිāļŊ්,Violet āˇƒāˇ„ āļšොāˇ… āļ´āļ§āļ¯ āˇƒāļą්āļ´ුāļģāļĢāļēෙāļą් āļ¸ āˇ€āļœේ Scattering āˇ€ීāļ¸āļ§ āļŊāļš් āˇ€ී āˇ€ිāˇƒිāļģ āļēāļēි āļ‘āˇ€ිāļ§ āļ…āļ´āļœේ āļ‡āˇƒāļ§ āļ´ැāļ¸ිāļĢෙāļą්āļąේ āļ‰āļ­ුāļ¸ āˇƒුāˇ…ු āļąිāļŊ්,Violet āˇƒāˇ„ āļšොāˇ… āļ†āļŊෝāļš āļ´්‍āļģāļ¸ාāļĢāļēāļšි. āļ‰āļ­ිāļģි āļšāˇ„, āļ­ැāļšිāļŊි āˇƒāˇ„ āļģāļ­ු āļ†āļŊෝāļšāļē āļ´āļ¸āļĢāļš් āļ­āļģංāļœ āļ†āļēාāļ¸āļē āˇ€ැāļŠි āļąිāˇƒා Scattering āļąොāˇ€ී āļ´්‍āļģāļ­ුāˇ€ිāļēāļ§ āļ´ැāļ¸ිāļĢේ āļ‘āˇ„ි āˇƒංāļšāļŊāļąāļēāļš් āļŊෙāˇƒ  āˇ„āˇ€āˇƒāļ§ āļ…āˇ„āˇƒ āļģāļ­ු āļ´āˇ„āļą් āļ¯ිāˇƒ්āˇ€ේ.




Tuesday, May 26, 2015

Fundamental Units of Measurement ( SI Units )

The International System of Units (Metric units) defined seven basic units of measure from which all other SI units are derived.

Measure
Unit
Symbol
Time
Second
S
Length
Meter
m
Mass
Kilogram
Kg
Current
Ampere
A
Temperature
Kelvin
K
Luminous Intensity
Candela
cd
Amount of Substance
Mole
Mol
Other Supplementary Units

Measure
Unit
Symbol
Plane Angles
Radian
rad
Solid Angles
Steradian
sr

āļŊෝāļšāļēේ āˇ€ිāˇ€ිāļ¯ āļ¯ේāˇ€āļŊ් āļ¸ැāļąීāļ¸ āˇƒāļŗāˇ„ා āļšොāļ´āļ¸āļĢ āļ‘āļšāļš āļ­ිāļļුāļąāļ­් āļ‘āļ¸ āļ‘āļš්āļš āˇƒිāļēāļŊ්āļŊ āˇ€ිāļēුāļ­්āļ´āļą්āļą āļšāļģ āļœāļąු āļŊāļļāļą්āļąේ āļ¸ෙāļ¸ āļ‰āˇ„āļ­ āļ¸ුāļŊිāļš āļ‘āļšāļš āˇ„āļ­ āļ‡āˇƒුāļģෙāļąි. āļ‘āļ¸ āļ‘āļšāļš āˇ„āļ­āļ§ āļ…āļ¸āļ­āļģāˇ€ āļ­āˇ€āļ­් āļ‘āļšāļš āļ¯ෙāļšāļš් āļ¯  āļąāļ¸් āļšāļģ āļ‡āļ­ āļšොāļą āˇƒāˇ„ āļāļą āļšොāļą āļ¸ැāļąීāļ¸ āˇƒāļŗāˇ„ා. 

āļ‹āļ¯ා :
velocity  =  Displacement / Time taken 
             =  m/s           
Velocity unit = ms−1

āˇƒāļ¸āˇ„āļģ āļ‘āļšāļš āļœොāļŠ āļąැāļœුāļąු āˇ€ිāļ¯ිāļē āˇƒංāļšීāļģāļĢ āļąිāˇƒා āļ’āˇ€ාāļēෙāļą් āļšිāˇ„ිāļ´āļēāļš් āļ´ැāˇ„ැāļ¯ිāļŊි āļšāļģāļ¯ෙāļąāļ¸් 

Time ( second )
Cs caesium 133 āˇƒāļ¸āˇƒ්āļŽාāļąිāļšāļēේ āˇƒāļš්āļ­ි āļ¸āļ§්āļ§āļ¸් āļ¯ෙāļšāļš් āļ…āļ­āļģ āļ‰āļŊෙāļ§්‍āļģෝāļą āˇƒ්āļŽාāļą āļ¸ාāļģුāˇ€ීāļ¸් (hyperfine) 9,192,631,770  āļ§ āļēāļą āļšාāļŊāļē. GPS Satellite āˇ€āļŊ āļļාāˇ€ිāļ­ා āˇ€āļą්āļąේ āļ¯ āļ¸ෙāˇ€ැāļąි Atom clock āļ‘āļšāļšි. 

Length ( Meter )
āļ­āļ´්āļ´āļģ 1/299,792,458 āļšාāļŊāļēāļšāļ¯ී vacuum tube āļ‘āļšāļš් āļ­ුāļŊ āļ†āļŊෝāļšāļē āļœāļ¸āļą් āļœāļą්āļąා āļ¯ුāļģ.

Luminous Intensity ( Candela )
āļąිāļēāļ¸ිāļ­ āļ¯ිāˇාāˇ€āļšāļ§ 540 × 1012 Hz āˇƒāļą්āļšāļēාāļ­āļēāļšිāļą් āļēුāļ­ු āļ‘āļš āˇ€āļģ්āļĢ āļ†āļŊෝāļšāļēāļš් Steradian āļ‘āļšāļš් āļ­ුāļŊ 1/683 watt āļ´්‍āļģāļ¸ාāļĢāļēāļš් āļŊāļļා āļ¯ේāļąේ āļąāļ¸් āļ‘āļē Candela āļ‘āļšāļšි.


Sunday, May 17, 2015

āļ†āļēුāļļෝāˇ€āļą් āˇ„āļŦ āˇ€ිāˇ්āˇ€āļēāļ§ āļģැāļœෙāļą āļēāļą Voyager spacecraft

 āļŊොāˇ€ āļ‡āļ­ි āˇƒිāļēāļŊු āļˇාāˇ‚ා āļ…āļ­āļģිāļą් āļˇාāˇ‚ා 55 āļš් āļ…āļ­āļģāļ§ āļ…āļ´āļœේ āˇƒිංāˇ„āļŊ āļˇාāˇ‚ාāˇ€ේ āļ†āļēුāļļෝāˇ€āļą් āˇ„āļŦ  Voyager spacecraft āļēාāļąා āļ¯ෙāļšāļš් āļ¸āļœිāļą් 1977 āļ¯ී āˇ€ිāˇ්āˇ€āļēේ āļļුāļ¯ිāļ¸āļ­් āļĸීāˇ€ීāļą් āˇƒොāļēාāļœෙāļą āļ´ිāļ§āļ­් āˇ€ිāļē. āļ¸ේ āļ¸ෝāļ­ා āˇ€ෙāļą āˇ€ිāļ§ āļ‘āļ¸ Voyager 1 āļēාāļąාāˇ€ 19,541,363,386 km āļ¯ුāļģāļšිāļą් Heliosheath ( āļ…āļ´āļœේ āˇƒුāļģ්āļēāļœෙāļą් āļ´ිāļ§āˇ€ෙāļą āļ†āļģෝāļ´ිāļ­ āļ…ංāˇු āˇƒුāˇ…āļœāļ­් āˇ€ිāˇ්āˇ€āļēෙāļą් āļ´āļąිāļąෙāļą āļ…āļģෝāļ´ිāļ§ āļ…ංāˇු āˇƒුāˇ…āļœāļ­් āļ‘āļšāļ§ āļœැāļ§ෙāļą āˇƒ්āļŽාāļąāļē ) āļ´āˇƒුāļšāļģāļ¸ිāļą් āˇƒāˇ€්āļģāļš්āļœ්‍āļģāˇ„ āļ¸āļĢ්āļŠāļŊāļēේ āļ­ොāļģāļ­ුāļģුāļ¯ āļ´ෘāļ­ුāˇ€ිāļēāļ§ āļŊāļļාāļ¯ෙāļ¸ිāļą් āļœāļ¸āļą් āˇ€ිāˇ්āˇ€āļē āļ¯āļš්āˇ€ා āļœāļ¸āļą් āļšāļģāļ¸ිāļą් āˇƒිāļ§ි.

āļšෙāˇƒේ āļąāļ¸ුāļ­් āļ¸ෙāˇ„ි āļļැāļ§āļģි āˇ€āļŊ āļļāļŊāļē āļģāļ¯ා āļ´āˇ€āļ­ිāļąු āļ‡āļ­්āļ­ේ 2025 āˇ€āļąāļ­ුāļģු āļ´āļ¸āļĢි. āļ‰āļą්āļ´āˇƒු Voyager spacecraft āˇ€āļŊāļ§ āļ…āļ´āļœේ āˇƒāļ¸්āļļāļą්āļ¯ āļ­ාāˇ€āļēෙāļą් āļ¸ිāļ¯ී āļ­āļąිāˇ€āļ¸ āļœāļ¸āļą් āļšāļŊ āļēුāļ­ුāļēි. āļ‘āˇƒේ āļ­āļąිāˇ€ āļ…āˇ€āļģුāļ¯ු 40,000 āļš් āļœāļ¸āļą් āļšāļŊ āˇ„ොāļ­් āļ…āļ´āļ§ āļŊāļœāļ¸ āļ‡āļ­ි Alpha Centauri āˇƒāˇ€්āļģāļš්āļœ්‍āļģāˇ„ āļ¸āļĢ්āļŠāļŊāļēāļ§ āļŊāļœා āˇ€ිāļē āˇ„ැāļš. āˇƒāļ¸āˇ„āļģ āˇ€ිāļ§ āļ‘āˇ„ි āļļුāļ¯ිāļ¸āļ­් āļĸීāˇ€ීāļą් āˇƒිāļ§ිāļē āˇ„ොāļ­් āļ…āļ´āļœේ āļŊොāˇ€ āļ‡āļ­ි āļ´ිāļą්āļ­ුāļģ āļąොāļēāļšුāļ­් āˇāļļ්āļ¯ āļ¯ැāļš āļœāļ­ āˇ„ැāļšි āˇ€āļąු āļ‡āļ­.



Voyager spacecraft āļēාāļąා āļ´ිāļŊිāļļāļŗ āˇ€ැāļŠිāļ¯ුāļģ āļ­ොāļģāļ­ුāļģු āļŊāļļා āļœැāļąීāļ¸ āˇƒāļŗāˇ„ා āļ¸ෙāļ¸ web āļ…āļŠāˇ€ි āˇ€āļŊāļ§ āļ´ිāˇ€ිāˇƒෙāļą්āļą

http://voyager.jpl.nasa.gov/
http://en.wikipedia.org/wiki/Voyager_program
http://en.wikipedia.org/wiki/Alpha_Centauri
http://en.wikipedia.org/wiki/Heliosphere

Sunday, February 8, 2015

How to configure Huwawei HG556b Ooredoo Router as a Access Point

How to configure your Adsl Huwawei HG556b Ooredoo Router for wifi access point. It is very simple step, I will explain step by step.




  • Connect to your router using wifi or LAN cable
  • Type 192.168.1.1 on your web browser 
  • Enter user name "admin"  and password "admin"
  • Click left hand bottom site Maintenance tab and next click device and click Restore Default Setting, It will reset to Factory Default setting you have to wait three minutes for this function
  • Again log to your router now if you are going to log to your router you have to use router back site Security key
  • Click basic tab and then click WAN tab, then Check all Interfaces configuration under the WAN connection and remove all those configuration.
  • Do same to the PTM tab
  • Do same to the ATM tab
  • Now you are in ATM tab Press (+) Button and add manualy new VPI/VCI "8/35" underte ATM and then click Submit Button 
  • Again going to WAN tab and press (+) button and sellect ATM1_8_35 from connection device in drop down menu 
  • Check WAN Connection, Service list, All LAN port, SSID1 and DHCP Transparent transmission and click Submit Button 
  • Go to LAN tab Disable DHCP Server and Disable DHCP Option pool and also change IP address  for your gateway IP address range click submit Button  ( put this IP for Qatar ooredoo Fiber Network  192.168.100.100 )
  • Go to WLAN Tab and change your SSID and password
See Below Youtube video for further details



Thursday, December 18, 2014

How To Download Facebook Videos Without Any Software

You want download video from Facebook on your desktop than this post is the best tricks to download video from Facebook. Using this trick you can Download high quality video from Facebook.
Normally Facebook should not give direct option to download video. So follow the below easy steps or you can also refer below Youtube video tutorial for reference.

Step 1
Play your video what you want to download
Step 2
Copy video url without www
Step 3
open new tab and type "m." then after past your video url ( Eg  m.facebook.com/video.php?ffxx   )
Step 4
Play video again. Than right click on video and select “save video as

If not clear this step you can see this Youtube video How to download facebook video without software

Sunday, November 9, 2014

What is the dBm or dBmW

A unit of measure used to reference signal strength level. unlike dB, this is relative measure, dBm is an absolute measure.

dBm ( Decibel-milliwatts ) or dBmW is a short from for the power ratio in decibels (dB) of the measured power referenced to one milli watt (mW). Most communication systems human speech, microwave and fiber optic networks as a convenient measure of absolute power because of its capability to express both very large and very small values in a short form. The baseline reference relationship is 1mW = 0 dBm. A doubling of signal power yields an increase of approximately 3 dBm eg: (2mW = 3 dBm).