Sunday, 29 June 2008

Eksperimen yang amat dahsyat..


By DOUGLAS BIRCH, Associated Press Writer Sat Jun 28, 3:08 PM ET

MEYRIN, Switzerland - The most powerful atom-smasher ever built could make some bizarre discoveries, such as invisible matter or extra dimensions in space, after it is switched on in August.
ADVERTISEMENT

But some critics fear the Large Hadron Collider could exceed physicists' wildest conjectures: Will it spawn a black hole that could swallow Earth? Or spit out particles that could turn the planet into a hot dead clump?

Ridiculous, say scientists at the European Organization for Nuclear Research, known by its French initials CERN — some of whom have been working for a generation on the $5.8 billion collider, or LHC.

"Obviously, the world will not end when the LHC switches on," said project leader Lyn Evans.

David Francis, a physicist on the collider's huge ATLAS particle detector, smiled when asked whether he worried about black holes and hypothetical killer particles known as strangelets.

"If I thought that this was going to happen, I would be well away from here," he said.

The collider basically consists of a ring of supercooled magnets 17 miles in circumference attached to huge barrel-shaped detectors. The ring, which straddles the French and Swiss border, is buried 330 feet underground.

The machine, which has been called the largest scientific experiment in history, isn't expected to begin test runs until August, and ramping up to full power could take months. But once it is working, it is expected to produce some startling findings.

Scientists plan to hunt for signs of the invisible "dark matter" and "dark energy" that make up more than 96 percent of the universe, and hope to glimpse the elusive Higgs boson, a so-far undiscovered particle thought to give matter its mass.

The collider could find evidence of extra dimensions, a boon for superstring theory, which holds that quarks, the particles that make up atoms, are infinitesimal vibrating strings.

The theory could resolve many of physics' unanswered questions, but requires about 10 dimensions — far more than the three spatial dimensions our senses experience.

The safety of the collider, which will generate energies seven times higher than its most powerful rival, at Fermilab near Chicago, has been debated for years. The physicist Martin Rees has estimated the chance of an accelerator producing a global catastrophe at one in 50 million — long odds, to be sure, but about the same as winning some lotteries.

By contrast, a CERN team this month issued a report concluding that there is "no conceivable danger" of a cataclysmic event. The report essentially confirmed the findings of a 2003 CERN safety report, and a panel of five prominent scientists not affiliated with CERN, including one Nobel laureate, endorsed its conclusions.

Critics of the LHC filed a lawsuit in a Hawaiian court in March seeking to block its startup, alleging that there was "a significant risk that ... operation of the Collider may have unintended consequences which could ultimately result in the destruction of our planet."

One of the plaintiffs, Walter L. Wagner, a physicist and lawyer, said Wednesday CERN's safety report, released June 20, "has several major flaws," and his views on the risks of using the particle accelerator had not changed.

On Tuesday, U.S. Justice Department lawyers representing the Department of Energy and the National Science Foundation filed a motion to dismiss the case.

The two agencies have contributed $531 million to building the collider, and the NSF has agreed to pay $87 million of its annual operating costs. Hundreds of American scientists will participate in the research.

The lawyers called the plaintiffs' allegations "extraordinarily speculative," and said "there is no basis for any conceivable threat" from black holes or other objects the LHC might produce. A hearing on the motion is expected in late July or August.

In rebutting doomsday scenarios, CERN scientists point out that cosmic rays have been bombarding the earth, and triggering collisions similar to those planned for the collider, since the solar system formed 4.5 billion years ago.

And so far, Earth has survived.

"The LHC is only going to reproduce what nature does every second, what it has been doing for billions of years," said John Ellis, a British theoretical physicist at CERN.

Critics like Wagner have said the collisions caused by accelerators could be more hazardous than those of cosmic rays.

Both may produce micro black holes, subatomic versions of cosmic black holes — collapsed stars whose gravity fields are so powerful that they can suck in planets and other stars.

But micro black holes produced by cosmic ray collisions would likely be traveling so fast they would pass harmlessly through the earth.

Micro black holes produced by a collider, the skeptics theorize, would move more slowly and might be trapped inside the earth's gravitational field — and eventually threaten the planet.

Ellis said doomsayers assume that the collider will create micro black holes in the first place, which he called unlikely. And even if they appeared, he said, they would instantly evaporate, as predicted by the British physicist Stephen Hawking.

As for strangelets, CERN scientists point out that they have never been proven to exist. They said that even if these particles formed inside the Collider they would quickly break down.

When the LHC is finally at full power, two beams of protons will race around the huge ring 11,000 times a second in opposite directions. They will travel in two tubes about the width of fire hoses, speeding through a vacuum that is colder and emptier than outer space.

Their trajectory will be curved by supercooled magnets — to guide the beams around the rings and prevent the packets of protons from cutting through the surrounding magnets like a blowtorch.

The paths of these beams will cross, and a few of the protons in them will collide, at a series of cylindrical detectors along the ring. The two largest detectors are essentially huge digital cameras, each weighing thousands of tons, capable of taking millions of snapshots a second.

Each year the detectors will generate 15 petabytes of data, the equivalent of a stack of CDs 12 miles tall. The data will require a high speed global network of computers for analysis.

Wagner and others filed a lawsuit to halt operation of the Relativistic Heavy Ion Collider, or RHIC, at the Brookhaven National Laboratory in New York state in 1999. The courts dismissed the suit.

The leafy campus of CERN, a short drive from the shores of Lake Geneva, hardly seems like ground zero for doomsday. And locals don't seem overly concerned. Thousands attended an open house here this spring.

"There is a huge army of scientists who know what they are talking about and are sleeping quite soundly as far as concerns the LHC," said project leader Evans.

n this Feb. 29, 2008 file photo, the last element, weighing 100 tons, of the ATLAS (A Toroidal LHC ApparatuS) experiment is lowered into the cave at the European Organization for Nuclear Research CERN (Centre Europeen de Recherche Nucleaire) in Meyrin, near Geneva, Switzerland. ATLAS is part of five experiments which, from mid 2008 on, will study what happens when beams of particles collide in the 27 km (16.8 miles) long underground ring LHC (Large Hadron Collider). ATLAS is one of the largest collaborative efforts ever attempted in the physical sciences. There are 2100 physicists (including 450 students) participating from more than 167 universities and laboratories in 37 countries.
(AP Photo/Keystone, Martial Trezzini, FILE)

No comments:

Labels

09' (2) 10th anniversary (1) 13 Mei (1) 2012 (1) 4 strategi kejayaan (1) adab (1) Adiputra (1) aduan pengguna (2) advanced learning (1) AFTL (2) agama (31) Akhir zaman (25) alat menambah tinggi (1) alumni (7) amal jariah (2) amalan 5 S' (1) amali sembelihan (1) amerika bangkrap (1) Anak Mersing (6) anak pintar (1) Ancaman Singapore (3) Ancient Astronauts (2) angkasawan negara (1) Anjakan Paradigma (3) ansara (2) anti-islam (3) Anugerah (2) apple (4) Aqiqah 2009 (1) Ar Rahnu (1) artis (1) asal-usul (9) Asas Tenaga dan Fokus (4) asrama (1) Atartuk (1) aura minda (2) ayam penyet (1) bahaya (1) balik kampung (6) bandar Mersing (9) banjir (5) banjir 2011 (1) banjir 2012 (2) banjir temerloh 2011 (2) batch 2010 (1) bencana (5) bengkel (1) ber (1) berbuka puasa (2) berita (16) berita bersara (3) berita Mersing (181) bersara (3) Bersih 2.0. politik (5) Bersih 3.0 (1) bina laman web (21) bio text (2) Bisi jual manok tuai (1) bisnes mersing (14) blog mybio A+ (1) blogger (2) boikot Dap (1) boikot Israel (2) Borang Kemasukan ke MRSM (4) brainstorming (1) buah pukul mersing (6) buat banner (8) buat web (2) budak hilang (1) Budaya Ilmu lemah (2) buddha (1) buggati (1) bukti cinta kpd nabi muhd (4) Buku (4) Buku Teks (1) butik mersing (1) BWP/ LDP/PRS/BPPSP 09' (5) Cafe Bengawan Solo (1) Cafe Buluh Wangi (2) cahaya (1) cakra (1) cameron highland (1) Cameron Highlands (17) cara berfikir (14) carnival (1) celik IT (23) cendol Talib (1) ceramah insuran (2) CERN (3) cerun masjid runtuh (1) cetusan minda (42) Chakra Healing (2) chicken chop (1) China (2) cikgu kahwin 2010 (4) cikgu kahwin 2012 (3) cikguiti.com. (1) cinta universal (1) Colour vibration teraphy (2) Cool Blog Mersing (1) Cornell system (1) cuti 2010 (6) cuti 2011 (36) cuti 2012 (21) cuti orang Mersing (35) cuti-cuti mersing (66) cvt (3) daging kalimah (1) dajjal (3) darul aitam (1) demo anti-ppsmi (2) Derma Gaza Kagum (1) derma maahad tahfiz mersing (3) DiGi WWWOW (1) dinar (5) doa pengasih (1) e-cover (1) ebook (4) ebook cover (2) ecover (1) education (1) EFT (2) Einstein (3) ekonomi (11) elit (1) emas (8) Endau (2) English camp (2) EQ (1) Esplanade Temerloh (4) ESQ (1) ex-BP82' (6) ex-homeroom (8) ex-student (17) ex-student kahwin (5) ex-teacher (10) Exam (3) exora (1) facebook (6) fatwa merokok (2) filem (1) filosofi (1) fitnah (2) fizik kuantum (1) formula ajaib (3) Forum (1) Foto guru 2009 (2) foto guru 2010 (1) foto raya 2010 (1) freemason (1) future mersing (3) future phenomewnon (1) gadget (6) gajet (3) gathering (2) gempa bumi (1) Golden Sisters Enterprise (1) Google Translate (2) Graduasi 2008 (1) graduasi 2010 (2) graduasi 2011 (1) Group Anak Mersing (1) gulai patin tempoyak (5) Gunug Qaf (1) Gunung Arong (1) guru baru (2) guru dan staf berpindah (2) guruku (3) H1N1 (2) H1N1 di MRSM Mersing (1) HAARP (1) Hadiah Nobel (1) Haffa Izzah (4) haji (1) halal (1) handphone (1) Hang Tuah (2) Hari Akademik (2) Hari Akademik 2009 (1) hari akhirat (1) hari anugerah (2) Hari Anugerah 09' (1) Hari Anugerah 2012 (1) hari bumi (2) hari bumi 2010 (1) Hari bumi 2012 (1) Hari Graduasi 2009 (1) Hari guru (4) Hari Guru 09' (1) Hari Guru 2012 (1) hari guru sejagat (1) Hari Inovasi 2011 (1) hari keluarga (3) hari keluarga 2008 (1) hari Keluarga 2009 (1) Hari Keluarga 2012 (1) Hari Koperasi 09' (1) hari Koperasi 2010 (1) hari kualiti 09 (1) hari malaysia (1) Hari Pendaftaran (1) Hari Pendaftaran 2009 (1) hari Q (1) hari raya 09 (2) Hari Raya 2012 (2) HEP (1) hi tech (34) hi-tech (34) hiburan (1) high alert (3) higher order thinking (76) higher self (59) Homeroom (9) Homestay (1) hospital mersing (1) Hotel Seri Malaysia (2) hujung dunia (2) hujung tahun (1) humour (11) humuor (1) hypnosis (1) IGCSE (1) ikan patin (14) ikan tilapia (2) ikhlas (1) iktibar (153) Ilmu vs Pemahaman vs Pegangan (1) ILP (6) imej (2) Indigo (1) Info (20) infrared (1) iPad (1) iran (1) islam (22) Israk dan mikraj (1) isteri (2) IT (6) Jadual Bas Mersing (1) Jadual YPM (1) Jakim (2) Jalan baru (4) Jambori Pengakap 2011 (4) jamuan 2011 (1) jamuan akhir tahun (2) Jamuan Anugerah Pengetua (5) Jamuan Anugerah Pengetua 2011 (2) Jamuan Anugerah Pengetua 2012 (1) Jamuan jabatan sains (2) jamuan raya (1) Jamuan SPM 2008 (1) JB catering (1) jejak kejayaan (6) jenaka (4) jenayah (1) jeti mersing (1) jodoh (1) Johor Darul Takzim (1) Jurufoto Kahwin Mersing (2) Jurufoto Perkahwinan (2) kad raya (2) KAGUM (2) karier (1) karnival (2) Karnival tg Leman (1) kawin awal (2) keajaiban (8) kebenaran (2) Kedai 1 Malaysia Mersing (1) kedai di Mersing (2) kedai makan Pak Usop (2) kehidupan (3) kejayaan 2011 (1) kejayaan pelajar (1) kejohanan olahraga 2010 (3) kek Mersing (5) Kekejaman Jepun (1) kelab (2) kelab futsal (1) Kelab Khidmat Masyarakat (1) keluarga (1) kem cuti kimia 2009 (2) kem juara spm (1) kem latihan (1) kemahiran belajar (2) kemalangan (1) kemarau (2) Kemasukan ke MRSM (4) kEMASUKAN KE MRSM 2013 (1) Kemasukan ke MRSM 2015 (1) kematian (6) kemelesetan ekonomi (3) kemiskinan (1) kempen pelancongan Mersing (1) kemudahan (1) keputusan SPM 2009 (2) keracunan makanan (1) kereta (4) kerja lapangan (1) kerjaya (2) keropok (1) Kesihatan (18) ketuanan Melayu (21) keturah (1) KFC baru Mersing (2) khazanah melayu (3) kiamat (7) Kisah cikgu (5) kisah malam pertama (1) Knight of Templer (1) koleksi soalan (1) komputer (2) Komuniti Mersing (1) kos hidup (1) kreatif (4) kuantum (3) kucing's articles (2) kuda mersing (1) kursus (5) Kursus Online database (1) lagenda (7) lagu (1) lailatul qadr (3) Laman Pendidik Mersing (1) laporan (2) laporan maktab (2) latihan dalam kumpulan 2011 (1) law of attraction (1) lawak (1) Lawatan Benchmarking MRSM Alor Gajah (1) Lebuh raya Sg Koyan-Ringlet (1) Legoland JB (1) lemak babi (2) LOA (1) logo (2) luarbiasa (1) Maahad Tahfiz Al Amin (1) madu (1) mahdi (1) main-main minda (5) majalah odyssey (1) Majlis Anugerah (2) Majlis Anugerah 2010 (1) Majlis perpisahan (5) Majlis Restu 09' (1) makan di JB (1) makan di mersing (42) makan di Temerloh (14) makan-makan (35) makananan western (3) makkah masa depan.berita mersing (2) maksiat (2) malam di Mersing (1) MARA KL (1) martial art (3) masa depan Mersing (4) masakan tempoyak (3) Masalah Guru (1) Mat Rempit Merompak (1) Mat Salai (2) mat samurai (1) matawang (2) mati (6) maulidurrasul 2011 (1) meditasi (2) melaka (7) melancong ke Mersing (8) melayu (14) Melayu Merdeka (1) Melayu..Bani Israel yg hilang? (8) Melayu..Bani Israel yg hilang?part3 (1) Melayu..Bani Israel yg hilang?part4 (2) menginap di Mersing (3) mentakab (1) merentas desa 2011 (1) mersing (2) Mersing Laguna (11) Mersing River Front (2) Mersing waterfront (2) mersing. Air Papan (1) Mersing's hotel (6) Mersix (1) Mesyuarat Agung Muafakat 2010 (1) Mesyuarat guru 2008 (1) mi (1) mi bandung (1) Mighty 2009 (1) MIGHTY 2012 (1) Mighty Minds Competition 09' (1) mimpi jumpa Rasulullah saw (1) minda (23) minda separa sedar (5) Minggu Aktiviti (5) Minggu Aktiviti sem2 (1) minyak (4) minyak naik (8) misteri (32) mitos (41) mnasir (1) monsun (6) moral (2) motivasi (9) movies (2) mrsm baru (3) MRSM Mersing (2) MRSM Ulul Albab (2) muhasabah (2) murtad (3) muslim in America (1) NahamPhoto (4) Nasi Kerabu (1) nasi lemak (1) Nasib Melayu (4) negara Islam (4) nostalgia (10) novel online (2) Novel Terbaru (1) obama (1) olimpiad KAS1 (1) online biz (5) p.ramlee (1) pacal votan (1) PAKAR (1) pakar patah (1) pakej pengantin (1) panduan beli kereta (2) Panduan HRMIS (2) Panduan HRMIS 2011 (1) panduan peraturan (4) pantai (2) Pantai Air Papan (1) pantai Mersing (5) Pantai Sri Lalang (1) Pantai Tg Genting (1) pantun (1) Pasar Jumaat Mersing (1) Pasar Karavan (1) pasar lelong (1) pasar malam Brinchang (1) pasar malam Mentakab (1) pasaraya TF Temerloh (4) PBSM (2) pejuang (3) pelaburan (2) pelaburan emas (4) peluang belajar (1) Pemasaran (1) pembedahan batin1 (2) Pemimpin amanah Allah (1) Pencen (1) Pendaftaran PRA (1) pendaftaran taekwondo (5) pendidikan (2) pengajaran (1) pengetua bersara (2) penggodam (1) pengguna (2) pengumuman (7) pengunjung (1) penjajahan minda (1) penjimat minyak (1) penterjemahan (1) penyakit jantung (2) peperiksaan pra percubaan SPM 2011 (4) perang salib (1) perbandingan harga (1) perguruan (1) peristiwa menarik (4) Perjuangan Komunis cuba dihidupkan semula..part 3 (1) Perjuangan Komunis ingin dihidupkan semula di Malaysia (3) perkahwinan guru (4) Perkhemahan (1) Perniagaan (2) perpustakaan (1) persilatan (1) pertahanan (1) Pertandingan (1) Pertandingan Kawad 09' (1) PESADA 2009 (1) Pesta Super 09.. (4) Pesta Layang-layang Air Papan (1) Pesta Type III (4) peta minda (1) petua (5) petua exam (1) petua kejayaan (1) petus (1) photoshop (16) piagam anugerah (1) Piala Dunia 2014 (1) Pilihan Raya BWP (1) Pilihan Raya Kecil (2) Pilihan Raya Umum ke-13 (2) pizza mersing (1) pluralisme (1) PMR 2010 (1) PMR 2011 (3) poligami (1) politik (15) popular (1) Pot Luck (1) PPD Mersing (1) PPSMI (3) produk kesihatan (1) produk laut (3) profile.sejarah (9) Program Bumi Hijau (2) program studi (2) pru 13 (2) pseudoscience (3) puasa (12) punca bala (2) punca tulang patah (1) Pusat Dagangan Mersing (10) pusat tuisyen Mersing (4) Pusat Tuisyen Usaha Waja Bestari (1) Pusat Tuisyen Zamrud (1) puting beliung Mersing (1) qilla's articles (18) R R Mersing (1) rahsia air (3) Rahsia Pintar (2) rahsia solat (5) rahsia umur panjang (6) ramadhan (6) ramadhan 2012 (1) ramalan (8) Rat Race n Rat Trap (1) Rawang Burger Bakar Mersing (1) rawatan alternatif (9) raya 2011 (1) raya open house 2009 (1) re-union ex-bp82' (3) rekod dunia (2) relativiti (1) remaja (1) resipi (1) resort tioman (1) restoran lot 85 (1) result 2010 (2) retro (2) reunion (4) reunion MRSM BP 86' (3) Roket Indonesia (1) rokok (1) roti john (1) ruang iklan percuma (3) Ruby's Kitchen (1) rugi (1) rumah (2) rumah tangga (2) rumahtangga (1) sabun Kasthuri (1) safebox (1) Sains Al Quran (3) Sains Islam (20) sajak (7) sajak hujung dunia (1) sajak Iqbal (5) salasilah (3) Sambutan 10 tahun MRSM Mersing (1) sate teluk iskandar (4) Saudi Yahudi ? (1) science fair 2009 (2) science fair 2010 (1) Science on Wheel 2011 (1) science text (2) sciencefair 2011 (1) secret recipe (1) sedih (1) SEFT (2) Sejarah (44) sejarah mersing (6) sejrah (2) selebriti (1) selesema babi (1) selsema babi (1) Seminar Biologi (3) Seminar Biologi 2012 (1) Seminar Biology (1) seminar biology 2011 (1) Seminar Biology dan Chemistry 2013 (1) seminar biology SPM 2009 (1) seminar Biology spm 2010 (1) Seminar Biology SPM 2011 (4) Seminar di Tg Pengelih (1) seminar pecutan kognitif sains (1) seminar PMR (1) Seminar YPM (1) seni peperiksaan (1) seri malaysia mersing (2) servis kereta (1) shopping raya (1) Singapura-pura (2) Sir Iqbal (3) Siri Bercakap Dengan Jin (2) SK Sri Mersing (1) skema pmr 2011 (1) skor bio A+ (3) SKT (1) SKT 2011 (1) Smart Learning (3) smartphone (3) spiritual (33) SPM (6) SPM 2010 (1) spm 2011 (6) SPM terbaik 2008 (1) Staf baru (2) staf kahwin 2010 (2) staf kawin 2011 (1) staf wedding (6) star mall mentakab (2) Starex (1) statistik (3) steve jobs (1) stevia (1) study biology (2) sukan 2012 (2) Sukan maktab (3) sumbangan hari graduasi (1) supermind (5) syair islam (4) syiar (1) syiar Islam (71) tablet pc (4) tabung Somalia (1) taekwondo mersing (15) taekwondo mersing grading (6) Takutkah hantu? (5) Takziah (12) Tanah Rata (1) tanda-tanda akhir zaman (4) Tanjung Genting (1) Tanjung Leman (1) Taska Cilik (1) tauladan (1) TBS (1) teknik belajar (3) telefon bimbit (2) teluk cempedak (1) tenaga hayat (3) teori (2) terapi Cinta (2) terapi mimpi (2) test drive (2) The Law of Attraction (1) Theory (1) Tim Pengetua ko-Q (1) tips internet (2) tips jaga kereta (1) tiramisu mersing (1) Titanic (1) Tracer Study (1) tragedi (1) Tragedi pemikiran Melayu (4) travelog haji (1) tsunami (1) Tuisyen YPM (1) Tun M (6) Tunas Saintis 09' (1) Tunas Saintis 2011 (1) ufo (2) Ujian Amali 2009 (1) ujian UKKM (1) ulamak (2) umat Islam (5) ungku aziz (2) universiti terbaik (3) UPSR 2011 (1) USS Singapore (1) Ustaz Lah (1) ustaz penipu (1) utusan online (1) Wadi Al-Amin (1) waliyullah (5) wanita (2) wanita Korea (1) Warung Bakso (1) Wi Max (1) Wilayah Iskandar (1) Worm Hole (1) yahudi (5) yakjuj makjuj (1) yearly planner 2010 (1) yearly planner 2012 (1) ZPE (2)

Pencegah Penyakit Terhandal

Pencegah Penyakit Terhandal
Klik utk order online

Komuniti Mersing

Blog Pilihan

There was an error in this gadget