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[Dunia] Teori Einstein dibuktikan! PELAJAR MALAYSIA TERLIBAT#457 malaskini bangangkem

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Post time 12-2-2016 12:50 AM | Show all posts |Read mode
Edited by kemaruk at 17-2-2016 11:27 PM

Gravitational waves: discovery hailed as breakthrough of the centuryhttps://www.theguardian.com/science/2016/feb/11/gravitational-waves-discovery-hailed-as-breakthrough-of-the-century



Scientists announce discovery of clear gravitational wave signal, ripples in spacetime first predicted by Albert Einstein

Physicists have announced the discovery of gravitational waves, ripples in spacetime first anticipated by Albert Einstein a century ago.

“We have detected gravitational waves. We did it,” said David Reitze, executive director of the Laser Interferometer Gravitational-Wave Observatory (Ligo), at a press conference in Washington.

The announcement is the climax of a century of speculation, 50 years of trial and error, and 25 years perfecting a set of instruments so sensitive they could identify a distortion in spacetime a thousandth the diameter of one atomic nucleus across a 4km strip of laserbeam and mirror.

The phenomenon was detected by the collision of two black holes. Using the world’s most sophisticated detector, the scientists listened for 20 thousandths of a second as the two giant black holes, one 35 times the mass of the sun, the other slightly smaller, circled around each other.

At the beginning of the signal, their calculations told them how stars perish: the two objects had begun by circling each other 30 times a second. By the end of the 20 millisecond snatch of data, the two had accelerated to 250 times a second before the final collision and dark merger.

The observation signals the opening of a new window on to the universe.

“This is transformational,” said ProfAlberto Vecchio, of the University of Birmingham, and one of the researchers at Ligo. “This observation is truly incredible science and marks three milestones for physics: the direct detection of gravitational waves, the first detection of a binary black hole, and the most convincing evidence to date that nature’s black holes are the objects predicted by Einstein’s theory.”

The scientists detected their epoch-making event using an instrument so sensitive it could detect a change in the distance between the solar system and the nearest star four light years away to the thickness of a human hair.

Prof B S Sathyaprakash, from Cardiff University’s school of physics and astronomy, said: “The shock would have released more energy than the light from all the stars in the universe for that brief instant. The fusion of two black holes which created this event had been predicted but never observed.”



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Post time 12-2-2016 12:52 AM | Show all posts
maksudnya apa bangkem??
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Post time 12-2-2016 12:53 AM | Show all posts
x fhm la. lantok wokme la
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 Author| Post time 12-2-2016 01:01 AM | Show all posts

100 tahun lepas, einstein ada temu satu teori
nama teori tu "general relativity theory"

teori ini menerangkan bagaimana graviti boleh wujud

isaac newton ada terangkan pasal graviti, tapi newton sendiri tak tahu bagaimana graviti boleh terhasil

jadi einstein nak tunjuk dia lagi hebat dari newton

menurut teori einstein ni, graviti terhasil akibat dari jisim (mass) melengkukkan angkasa lepas

cuba tengok gambar kat bawah ni



bola warna oren tu adalah matahari.. jisim matahari sangat besar hingga melengkukkan (bend) ruang angkasa

bola warna putih tu bumi.. bumi terperangkap dalam lengkukan tu

semua benda yang berdekatan dengan matahari akan tertarik akibat lengkukan ni

tarikan itu dinamakan graviti

jadi, baru sekarang dorang sahkan benda ni benar dengan mengesan "gravitational wave"

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Post time 12-2-2016 01:03 AM | Show all posts
bangkem terburuk

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Post time 12-2-2016 01:05 AM | Show all posts
kemaruk replied at 12-2-2016 01:01 AM
100 tahun lepas, einstein ada temu satu teori
nama teori tu "general relativity theory"

jadinya aku ingatkan gravity ni terhasil sebab putaran bebola besi dlm bumi,  (teras bumi)

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Post time 12-2-2016 01:07 AM | Show all posts
kemaruk replied at 12-2-2016 01:01 AM
100 tahun lepas, einstein ada temu satu teori
nama teori tu "general relativity theory"

teori relativiti ni pasal gravity ke bangkem?
aku ingat pasal kelajuan, cahaya

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 Author| Post time 12-2-2016 01:07 AM | Show all posts
setiap benda yang berjisim akan melengkukkan ruang angkasa

makin besar jisim, makin besar kesan lengkukkan

bumi sendiri pon melengkukkan ruang angkasa jugak

sebab tu la bulan mengorbit bumi, dan kita melekat kat atas bumi ni

kita sebenarnya "tergelincir" akibat lengkukan ni

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Post time 12-2-2016 01:09 AM From the mobile phone | Show all posts
Terbaiklah bangkem.. Penerangan yg mudah difahami marhain mcm saya..
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 Author| Post time 12-2-2016 01:11 AM | Show all posts
sekngucing replied at 12-2-2016 01:07 AM
teori relativiti ni pasal gravity ke bangkem?
aku ingat pasal kelajuan, cahaya

yang tu special theory of relativity (STOR)

STOR ni cuma boleh ukur pergerakkan objek yang bergerak lurus jah dan cuma signifikan kalau objek tu bergerak sangat laju menghampiri kelajuan cahaya

untuk ukur pasal pergerakkan planet, komet, graviti bagai, einstein cipta satu lagi teori iaitu general theory of relativity
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 Author| Post time 12-2-2016 01:12 AM | Show all posts
dianaris replied at 12-2-2016 01:09 AM
Terbaiklah bangkem.. Penerangan yg mudah difahami marhain mcm saya..

bak kata einstein:



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Post time 12-2-2016 01:15 AM | Show all posts
kemaruk replied at 12-2-2016 01:11 AM
yang tu special theory of relativity (STOR)

STOR ni cuma boleh ukur pergerakkan objek yang berg ...

bukan kedua duanya ialah e=mc2 ke?

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Post time 12-2-2016 01:16 AM | Show all posts
bangkem, cuba explain pasal darek matters dan dark energy pulak
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Post time 12-2-2016 01:19 AM | Show all posts



subhanallah , amazing kan?
i tertarik dengan sensitiviti instrument tu untuk mengukur dan mengesan perubahan yang berlaku dalam u know 20 thousandth of a second , ish ish....

tu part yg perfecting their instrument tu

and i wonder

macam mana depa tulsi research grant depa dalam bab fundamental science like this dalam research bila mana outcome itu dimahukan dalam bentuk a 'product'




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 Author| Post time 12-2-2016 01:22 AM | Show all posts
sekngucing replied at 12-2-2016 01:15 AM
bukan kedua duanya ialah e=mc2 ke?

e=mc^2 adalah prinsip asas untuk kedua-dua theory ni

tapi rumus tu lebih kepada menerangkan pasal tenaga yang tersimpan dalam setiap jisim

STOR lebih menerangkan tentang kerelatifan antara kelajuan dan masa
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 Author| Post time 12-2-2016 01:32 AM | Show all posts
sekngucing replied at 12-2-2016 01:16 AM
bangkem, cuba explain pasal darek matters dan dark energy pulak

dark matter = satu "dinding/halangan" yang menyebabkan angkasa ni mempunyai bentuk contohnya bentuk galaksi.. kalau dark matter ni tak wujud, maka setiap bintang akan bersepah dan tak membentuk galaksi.. kalau sistem solar ini graviti yang membentuknya, galaksi pulak bukan graviti yang membentuknya, tapi dark matter

dark energy = alam angkasa ni sentiasa berkembang (expanding) dengan kelajuan yang semakin meningkat (accelerating).. apa yang menyebabkan ianya semaki cepat berkembang?? ada yang tolak ke?? ya, yang menolak tu namanya dark energy

kedua-dua benda ni (dark matter dan dark energy) masih tak disahkan kewujudannya

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Post time 12-2-2016 02:15 AM | Show all posts
dapatkah mereka membuktikan kewujudan tuhan?  

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Post time 12-2-2016 02:21 AM | Show all posts
kemaruk replied at 12-2-2016 01:32 AM
dark matter = satu "dinding/halangan" yang menyebabkan angkasa ni mempunyai bentuk contohnya bentu ...

hebatla bangkem
aku memang tertarik dgn dark matter dan dark energy ni
ia mcm benda ghaib, ada sekeliling kita tp tak dpt dibuktikan

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 Author| Post time 12-2-2016 02:33 AM | Show all posts
sekngucing replied at 12-2-2016 02:21 AM
hebatla bangkem
aku memang tertarik dgn dark matter dan dark energy ni
ia mcm benda ghaib, ada s ...

bangkem lebih suka pasal quantum theory, azmi
dorang sekarang tengah reka quantum computer

tunggu la, kalau dah siap nanti, quantum computer ni beribu malah berjuta kali ganda lebih laju dari komputer yang kita ada sekarang ni
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Post time 12-2-2016 02:37 AM | Show all posts
kemaruk replied at 12-2-2016 02:33 AM
bangkem lebih suka pasal quantum theory, azmi
dorang sekarang tengah reka quantum computer

ceh, berenti panggil aku azmi
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