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Author: Fie'Z'idane

Betulkah teori ni????

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jarum This user has been deleted
Post time 2-6-2003 11:32 PM | Show all posts
[fly]hhhmmmm sesekali menyinggah disini - - -
menarik jugak  

la haula'wala quataillah billah hil a'liyil a'zhim
[/fly]
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Post time 3-6-2003 03:29 AM | Show all posts

hi Sarah..

Salam..
okay kalau wireless communication..then are you familiar with this thing called quantum encryption..yg is known to be hackers' proof? tanye jer sbb saya kurang faham tapi berminat nak tahu...
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Post time 3-6-2003 03:40 AM | Show all posts

eh

IB tu menatang ape ?

Quantum encryption ? err pernah dengar ..tapi full prinsip dia i dah lupa..

it's about deducing the other end quantum state (qubit kalau tak silap) by observing the state information at our end ..  dia ade prinsip duality ke ape tah .. ade laa kena mengena ngan spin and one cannot exist without another ..   buku, notes quantum theory semua ade dalam kotak kat dalam stor .. malas lah pulak nak bukak balik

actually my field lebih kepada radio frequency ..  macam handphone, tv, radio, satelite dl .. tapi jangan ler tanya kat i camne nak buat handphone atau satelite plak .  mampuih i nak citer ..
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Post time 3-6-2003 12:11 PM | Show all posts

hai madame

salam..

IB - international baccalaureate selalunya mara  yg anjurkan...kalu nak keep it discreet tak pe....i respect people's confidentiality and opinion...

so .nak tanya sikit kat Uk dulu heboh pasal the link between cancer and h/phone usage..boleh bagi tau ke sikit ..sebab kajian yg dinyatakan dlm article new scientist stated that it has been indicated that saintis yg kaji worms ( ye cacing) dpat nampak /observe yg kalau didedahkan dgn radio frequency yg tertentu cacing tu punya rate of growth tu jadi lebih tinggi...implying that " e/magnetic wave " nie .ade influence  on cell division ..and so on...what 's your take, then?

thank you for your previuos explantn ..again BLESS you..for doing something good everyday//
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Fie'Z'idane This user has been deleted
 Author| Post time 3-6-2003 08:37 PM | Show all posts
Semakin pening laa. Rasa cam dah kuar tajuk
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Post time 4-6-2003 12:02 AM | Show all posts
Originally posted by mbhcsf at 2003-6-3 06:11:
salam..

IB - international baccalaureate selalunya mara  yg anjurkan...kalu nak keep it discreet tak pe....i respect people's confidentiality and opinion...

so .nak tanya sikit kat Uk dulu he ...


...
i nye opinion ? kalau rasa takut, jangan guna handphone, and kalau nak guna sangat, guna headset and handphone tu letak jauh jauh dari badan..  and biler nak bawak handphone tu, off biler tak guna .. sbb masa idle pun handphone tu transmit gak..

the same goes to cordless phone ..  same je ..

tapi bagi i lah... kalau dah sampai ajal tu .. mati gak .. tak guna handphone pun mati gak ..

personally, i lagi takut kat sun ray daripada handphone nye EM field.

anyway, by precaution, janganler excessive sangat guna  handphone tu.. bukan sbb EM shj .. takut telinga tu leh jadi rosak gak ..


ps1: i tak amik IB dulu, i amik SPM gak ..
ps2: fizidane..sorrylah melarikan tajuk topik u ni ;)
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tenuk9 This user has been deleted
Post time 6-6-2003 04:08 PM | Show all posts

balik kepada tajuk...

kes kes kes kes...

ganaih sungguh topik nih macam2 habis semua dah kuar..

meh aku bawak balik pada tajuk... pasal kalau capai kelajuan cahaya leh pegi ke masa hadapan atau balik ke zaman lampau...

kes kes... pada aku sungguh tak logik.. mende nih sure dan takmungkin terjadi... aku rasa takde kene mengena dengan formula yg ko bagi tuh lansung.. (hehehh nih my opinion lah.. )

citer pasal kelajuan cahaya nih sepengetahuan aku semua berbalik / bermula dari formula einstein tuh lah.. formula E = MC^2 tuh..... dia buat formula based pada kelajuan cahaya (hehh.. betul ke nih).. so dijadikan citer.. kalau ada benda (selain dari cahaya) boleh mencapai kelajuan cahaya.. so kira formula dia nih dah salah lah.. sedangkan formula nih dah accepted by semua saintis.. gitu2 lah.. kalau satu benda tuh dah lagi laju dari cahaya.. formula dia nih dah talk beri kesan pada benda tuh..

tapi pada pendapat aku lah.. orang heboh2.. sebab kita takde teknologi nak sampai kelajuan cahaya lagi.. nanti dapat capai dah takde benda dah....
cuma formula einstein tuh orang kena revised balik lah.. tambah... offset2 sikit formula tuh.. baru betul balik.. sebab formula nih takde yg betul2 perfect / correct.... mesti ada ralat2 sikit...

by the way aku ada baca yg forumner tak tau apa itu kelajuan cahaya...
kelajuan cahaya tuh accepted by zaman sekarang nih.. lebih dikenali sebagai c = lebih kurang 3.0 x 10^8 m/s, kalau tak silap aku lah... atau juga dikenali sebagai WARP....

gitu2 lah....
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liberalist This user has been deleted
Post time 6-6-2003 09:14 PM | Show all posts
Originally posted by Sarah_Radzi at 2003-6-1 06:55 PM:
sound wave propagates via the vibration of mass.. if there is no mass, no vibration .. then no sound ..  that's why there is no sound  in a vacuum environment


Hmm.... aku pun langsung tak terpikir pasal ni  .....
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liberalist This user has been deleted
Post time 6-6-2003 09:21 PM | Show all posts
News in Brief :  Relativity Rethink

Scientists have found that the speed of light may be variable over time and not constant, which if true would make Einstein抯 theory of relativity wrong.  Reporting in the 8 August issue of Nature, Paul Davies from Sydney抯 Macquerie University report that data produced by UNSW astronomer John Webb suggested that light from a distant quasar, a star-like object, varied as it travelled to Earth over 12bn years.  If substantiated, it could mean that humans might be able to overcome the restriction that says nothing can travel faster than light, making interstellar travel a possibility.

Source :  Chemistry & Industry Edition 2002.
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Post time 6-6-2003 09:35 PM | Show all posts

salam

ok nie nak tanya sikit..saya tak tau s/ada ini betul ke tak .tapi ade dah experiment yg cakap speed of light ni boleh dilambatkan ...dlm satu research  yd ada bunyi mcm solid state physic ..ala.. 2/3 thn lepas...ade sesiapa tahu ke hal ini...atau saya yg tak  buat -buat dengar..( kalau silap minta maaf) sesangat...
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Post time 6-6-2003 09:59 PM | Show all posts
Originally posted by tenuk9 at 2003-6-6 10:08:
kes kes kes kes...

ganaih sungguh topik nih macam2 habis semua dah kuar..

meh aku bawak balik pada tajuk... pasal kalau capai kelajuan cahaya leh pegi ke masa hadapan atau balik ke zaman lampau...

kes kes... pada aku sungguh tak logik.. mende nih sure dan takmungkin terjadi... aku rasa takde kene mengena dengan formula yg ko bagi tuh lansung.. (hehehh nih my opinion lah.. )

citer pasal kelajuan cahaya nih sepengetahuan aku semua berbalik / bermula dari formula einstein tuh lah.. formula E = MC^2 tuh..... dia buat formula based pada kelajuan cahaya (hehh.. betul ke nih).. so dijadikan citer.. kalau ada benda (selain dari cahaya) boleh mencapai kelajuan cahaya.. so kira formula dia nih dah salah lah.. sedangkan formula nih dah accepted by semua saintis.. gitu2 lah.. kalau satu benda tuh dah lagi laju dari cahaya.. formula dia nih dah talk beri kesan pada benda tuh..

tapi pada pendapat aku lah.. orang heboh2.. sebab kita takde teknologi nak sampai kelajuan cahaya lagi.. nanti dapat capai dah takde benda dah....
cuma formula einstein tuh orang kena revised balik lah.. tambah... offset2 sikit formula tuh.. baru betul balik.. sebab formula nih takde yg betul2 perfect / correct.... mesti ada ralat2 sikit...

by the way aku ada baca yg forumner tak tau apa itu kelajuan cahaya...
kelajuan cahaya tuh accepted by zaman sekarang nih.. lebih dikenali sebagai c = lebih kurang 3.0 x 10^8 m/s, kalau tak silap aku lah... atau juga dikenali sebagai WARP....

gitu2 lah....


yang pasal formula E=mc
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Post time 6-6-2003 10:04 PM | Show all posts
Originally posted by mbhcsf at 2003-6-6 15:35:
ok nie nak tanya sikit..saya tak tau s/ada ini betul ke tak .tapi ade dah experiment yg cakap speed of light ni boleh dilambatkan ...dlm satu research  yd ada bunyi mcm solid state physic ..ala.. 2 ...


speed of light bebetul memang ikut medium ..  

yang the constant c tu.. cuma speed limit .. and cuma light je yang boleh cecah speed tu ...

err i paham ke tak soalan ni ?
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Post time 6-6-2003 10:09 PM | Show all posts
Originally posted by liberalist at 2003-6-6 15:21:
News in Brief :  Relativity Rethink

Scientists have found that the speed of light may be variable over time and not constant, which if true would make Einstein抯 theory of relativi ...



hehehe ini logik gak ...selama ni semua formula, c yang constant .. kalau time yang constant kan bagus .. tapi hancurlah harapan i nak jadi tua lambat
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liberalist This user has been deleted
Post time 6-6-2003 10:46 PM | Show all posts
kalau aku boleh bagi rating .. aku nak rating kat post ko yang ke 3  di atas post aku ni
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Post time 6-6-2003 11:51 PM | Show all posts
Originally posted by liberalist at 2003-6-6 22:46:
kalau aku boleh bagi rating .. aku nak rating kat post ko yang ke 3  di atas post aku ni

salam
actually saya setuju dgn pendapat Liberalist nie, selama ini org semua guna jargon (termasuk saya juga , kot) tapi KAkak telah menerangkan dlam " lay man's term" jadi ..baguslah and again bless you ..for doing something good..
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Post time 7-6-2003 07:11 AM | Show all posts
berputar
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Post time 9-6-2003 01:14 PM | Show all posts

kak sarah

salam..
boleh saya tahu..
satellite nie..banyak jenis kan? so apa yg membezakan sesuatu satelit itu dari yg lain/ cth satlit utk pertahan memang berbeza dgn satelit utk kajicuaca kann? so principe yg utama tu same ..ke..dan kelengkapan yg berbeza...adakah itu jwpnnya?


adakah semua satelit di bumi cuma  mengelilingi bumi dlm altitud yg tertentu? sbb tak berlakunya the clashes of two satellites yg berputar pada masa yg sama?
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Post time 10-6-2003 07:19 PM | Show all posts

satelite ?

beza satelite antara satu sama lain adalah equipmentnye ..
kalau satelite tu gunanya utk telekommunikasi .. equipment dia hanya untuk telekomunikasi spt parabola, power amplifier signal reshaper dll..  (btw semua satelite ade parabola )

kalau utk surveillance, alat alat dia adalah sensors yang digunakan utk surveillance tu .. macam infrared camera .. dll

bila cakap pasal satelite pertahanan, takde beza pun ngan satelite biasa, cuma equipment kat dalam satelite tu yang lebih sophisticated & mahal + security features yang dahsyat ...  and yang hantar tu army lah, compared ngan  satelite biasa yang dihantar oleh company biasa ..

satu lagi beza satelite pertahanan ngan satelite biasa ..
biler hantar satelite pertahanan, tak ramai yang tahu .. compared dengan satelite biasa ...

ade satu organization yang keep track semua satelite yang dihantar and simpan data macam tarikh, altitude, position, jangkahayat, dll ...  jadi biler nak hantar satelite tu, sepatutnya check & daftar kat organization tu supaya tak ade collision nanti.. tapi biasanya defense satelite tak bagi full information kat organization tu  (especially US) ..  jadi kebarangkalian nak berlaga tu tak banyak lah ...  

tak semua satelite mengelilingi bumi ..  kalau geo-stationary satelite ...  relative position satelite tu compared kat bumi = constant .. satelite tu pusing sama sama ngan bumi ...
dan tak semua satelite mengelilingi bumi kat attitude yang fix .. ade yang bujur sket .. ikutlah design dia camne ..

ape ape pun... space luas .. jadi kena tunggu lama lagi ler baru ade traffic jam kat atas tu ..
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Post time 11-6-2003 03:14 AM | Show all posts

salam KAk SARAH Radzi..

kalau tak silap la kan..dr mazlan othman cakap agak susah untuk defone langit ...adakah langit yg kita refer tu = space/ so what is space then?
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tenuk9 This user has been deleted
Post time 12-6-2003 01:52 PM | Show all posts
[quote]Originally posted by Sarah_Radzi at 2003-6-6 09:59 PM:
yang pasal formula E=mc
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