Topic: Science
+Anonymous A — 10 months ago #65,731
Hukum Kegravitian Semesta Newton menyatakan daya graviti antara dua jasad adalah berkadar terus dengan hasil darab jisim kedua-dua jasad dan berkadar songsang dengan kuasa dua Jarak di antara pusat dua jasad tersebut.
Formula berkaitan Hukum Kegravitian Semesta Newton:
[math]F = \frac{GMm}{r^2}[\math]
Formula berkaitan Hukum Kegravitian Semesta Newton:
[math]F = \frac{GMm}{r^2}[\math]
+Anonymous B — 10 months ago, 1 week later[T] [B] #658,768
Alley Oop By V.T. Hamlin
OSCAR BOOM : "AMOS IS RIGHT, DOC! THIS SWITCHING MODULE OF YOURS HAS TAPPED A NEW REALM OF EXISTENCE!"
AMOS BRONSON : "I THINK IT DESERVES FURTHER STUDY, ELBERT!"
OSCAR BOOM : "SO DO I! WHY, IF WE COULD GET SOME PHOTOS OF DELFON, THEY'D BE WORTH A FORTUNE!"
DR ELBERT WONMUG : "SLOW DOWN, OSCAR! THERE'S ONE THING I'M AFRAID YOU'VE BOTH OVERLOOKED..."
OSCAR BOOM : "WHAT'S THAT?"
DR ELBERT WONMUG : "WE MAY NOT BE ABLE TO GET THERE AGAIN!"
OSCAR BOOM : "AMOS IS RIGHT, DOC! THIS SWITCHING MODULE OF YOURS HAS TAPPED A NEW REALM OF EXISTENCE!"
AMOS BRONSON : "I THINK IT DESERVES FURTHER STUDY, ELBERT!"
OSCAR BOOM : "SO DO I! WHY, IF WE COULD GET SOME PHOTOS OF DELFON, THEY'D BE WORTH A FORTUNE!"
DR ELBERT WONMUG : "SLOW DOWN, OSCAR! THERE'S ONE THING I'M AFRAID YOU'VE BOTH OVERLOOKED..."
OSCAR BOOM : "WHAT'S THAT?"
DR ELBERT WONMUG : "WE MAY NOT BE ABLE TO GET THERE AGAIN!"
+Anonymous C — 9 months ago, 3 weeks later, 1 month after the original post[T] [B] #660,547
相对论
面临挑战
在现代科学领域内,一个几乎是神圣不可侵犯的理论 - - 相对论,最近正面临美国一些科学家的严峻挑战。近年来,用来解释宇宙结构的科学校型,都是依据科学巨匠爱因斯坦在二十世紀初期提出的相对论而来的。
由太阳物理学家西尔教授领导的三位天文学家说,他们在爱因斯坦的计算里发现了一个错误, 因而有百分之九十五的把握, 证明爱因斯坦的相对论不正确。他们认为, 太阳的形状和活动,有些不规则的现象, 因而影响到太阳的引力作用, 进一步影响到水星的运行, 而爱因斯坦的计算, 因当时天文学的局限, 没有也不可能考虑到这一因素。但天休物理学认为, 一个理论的成立, 容不得计算上分毫的差错, 如果不是完全对,那么就是完全错。
向爱因斯坦的这一挑战,引起了世界科学界的极大兴趣和关注。如果西尔教授是对的,那么, 整个科学界将面临巨大的更新和变革。
面临挑战
在现代科学领域内,一个几乎是神圣不可侵犯的理论 - - 相对论,最近正面临美国一些科学家的严峻挑战。近年来,用来解释宇宙结构的科学校型,都是依据科学巨匠爱因斯坦在二十世紀初期提出的相对论而来的。
由太阳物理学家西尔教授领导的三位天文学家说,他们在爱因斯坦的计算里发现了一个错误, 因而有百分之九十五的把握, 证明爱因斯坦的相对论不正确。他们认为, 太阳的形状和活动,有些不规则的现象, 因而影响到太阳的引力作用, 进一步影响到水星的运行, 而爱因斯坦的计算, 因当时天文学的局限, 没有也不可能考虑到这一因素。但天休物理学认为, 一个理论的成立, 容不得计算上分毫的差错, 如果不是完全对,那么就是完全错。
向爱因斯坦的这一挑战,引起了世界科学界的极大兴趣和关注。如果西尔教授是对的,那么, 整个科学界将面临巨大的更新和变革。
+Anonymous D — 8 months ago, 2 weeks later, 1 month after the original post[T] [B] #662,224
Time travel possible, Hawking concedes
LONDON - Professor Stephen Hawking, one of the world's top cosmic physicists, has accepted the possibility of time travel - an idea he had dismissed for years.
"If you combine Einstein's General Theory of Relativity with quantum theory it does begin to seem a possibility," he was quoted as saying by Britain's Sunday Times newspaper.
But the Cambridge University mathematics professor added that he still thought it would probably never be practical.
Prof Hawking previously ridiculed the idea, basing his argument on science and ordinary logic and saying something which could let you kill your ancestors or alter your past was unthinkable.
"The best evidence that time travel will never be possible is that we have not been invaded by hordes of tourists from the future," he said two years ago.
But he spells out his change of heart in a foreword for The Physics Of Star Trek, a book by US astronomer Lawrence Krauss which is to be published next month, saying: "One of the consequences of rapid interstellar travel would be that one could also travel back in time."
Einstein's belief that time and space were closely related and were both affected by gravity sparked speculation that time travel could be possible, a view an increasing number of astronomers and physicists have signed up to in recent years.
"His theories led to the idea that enormous gravitational fields, such as those found around collapsed stars known as black holes, could reverse the flow of time," the Sunday Times said.
However, harnessing enough energy for a machine to send travelers back through time would pose a major problem. - Reuter.
LONDON - Professor Stephen Hawking, one of the world's top cosmic physicists, has accepted the possibility of time travel - an idea he had dismissed for years.
"If you combine Einstein's General Theory of Relativity with quantum theory it does begin to seem a possibility," he was quoted as saying by Britain's Sunday Times newspaper.
But the Cambridge University mathematics professor added that he still thought it would probably never be practical.
Prof Hawking previously ridiculed the idea, basing his argument on science and ordinary logic and saying something which could let you kill your ancestors or alter your past was unthinkable.
"The best evidence that time travel will never be possible is that we have not been invaded by hordes of tourists from the future," he said two years ago.
But he spells out his change of heart in a foreword for The Physics Of Star Trek, a book by US astronomer Lawrence Krauss which is to be published next month, saying: "One of the consequences of rapid interstellar travel would be that one could also travel back in time."
Einstein's belief that time and space were closely related and were both affected by gravity sparked speculation that time travel could be possible, a view an increasing number of astronomers and physicists have signed up to in recent years.
"His theories led to the idea that enormous gravitational fields, such as those found around collapsed stars known as black holes, could reverse the flow of time," the Sunday Times said.
However, harnessing enough energy for a machine to send travelers back through time would pose a major problem. - Reuter.
+Anonymous E — 8 months ago, 2 hours later, 1 month after the original post[T] [B] #662,245
@previous (D)> LONDON - Professor Stephen Hawking, one of the world's top cosmic physicists, has accepted the possibility of time travel - an idea he had dismissed for years.
+Anonymous F — 8 months ago, 1 day later, 1 month after the original post[T] [B] #662,513
+Anonymous G — 6 months ago, 2 months later, 3 months after the original post[T] [B] #670,528
Vacuum collapse: The Possible End Of Everything In ‘Lower Decks’ : http://aiptcomics.com/2025/02/11/vacuum-collapse-star-trek-lower-decks
+Anonymous H — 6 months ago, 16 hours later, 4 months after the original post[T] [B] #670,580
I’m gonna blow all y’all’s minds when I drop this scientific knowledge.
A hotdog is a sandwich.
A hotdog is a sandwich.
·Anonymous E — 6 months ago, 30 minutes later, 4 months after the original post[T] [B] #670,581
+Anonymous I — 5 months ago, 1 month later, 5 months after the original post[T] [B] #673,582
Einstein hade rätt om gravitationen
Vad är skillnaden mellan Newtons och Einsteins gravita- tionsteori? Hur stor är skillna- den och vad beror den på? /Joa-kim Meier
Newton beskriver gravitation som en kraft - den kraft som får äpplen att falla till marken och månen att stanna kvar i ba- na kring jorden. All materia at-traherar annan materia via denna kraft.
Newtons kraft har dock ett problem: Den verkar ögonblickligen över stora avstånd. Om exem- pelvis solen plötsligt skulle flyt- ta sig, skulle jordens bana ome- delbart rubbas. Detta strider mot Einsteins speciella relativitetsteori, enligt vilken ingen på- verkan kan förmedlas snabbare än ljuset. Newtons teori kan därför inte vara riktig.
Det behövs, visar det sig, en drastiskt annorlunda teori för att lösa problemet: Einsteins allmänna relativitetsteori. Här finns ingen gravitationskraft. I stället är det rummets eller rumtidens - krökning som lig- ger bakom gravitationen. Tunga kroppar tenderar att röra sig mot varandra, inte för att de på- verkar varandra med en kraft, utan för att de kröker rumtiden i sitt närområde. När exempelvis månen kretsar runt jorden, gör den det inte på grund av någon kraft, utan för att den färdas rakt fram i den av jorden krökta rumtiden.
Det råder i dag inget tvivel om att det är Einsteins teori som är den korrekta. I många situatio- ner - som fallrörelse nära jor- dytan eller planeters banrörelse ger dock de två teorierna näs- tan identiska resultat. Eftersom det är mycket enklare att göra beräkningar enligt Newtons te- ori använder fysiker den fortfa- rande när det går. Men i extrema situationer, som i närheten av neutronstjärnor eller svarta hål, fungerar inte Newtons teori. Den kan heller inte användas för att besvara kosmologiska frågor. Därtill finns fenomen som inte alls ryms i Newtons beskriv- ning, såsom gravitationsvågor eller det faktum att tiden går olika snabbt på olika höjd.
/Sören Holst, teoretisk fy-siker, Stockholms universitet
"Eftersom det är mycket enklare att göra beräkningar enligt Newtons teori använ- der fysiker den fortfarande när det går."
Vad är skillnaden mellan Newtons och Einsteins gravita- tionsteori? Hur stor är skillna- den och vad beror den på? /Joa-kim Meier
Newton beskriver gravitation som en kraft - den kraft som får äpplen att falla till marken och månen att stanna kvar i ba- na kring jorden. All materia at-traherar annan materia via denna kraft.
Newtons kraft har dock ett problem: Den verkar ögonblickligen över stora avstånd. Om exem- pelvis solen plötsligt skulle flyt- ta sig, skulle jordens bana ome- delbart rubbas. Detta strider mot Einsteins speciella relativitetsteori, enligt vilken ingen på- verkan kan förmedlas snabbare än ljuset. Newtons teori kan därför inte vara riktig.
Det behövs, visar det sig, en drastiskt annorlunda teori för att lösa problemet: Einsteins allmänna relativitetsteori. Här finns ingen gravitationskraft. I stället är det rummets eller rumtidens - krökning som lig- ger bakom gravitationen. Tunga kroppar tenderar att röra sig mot varandra, inte för att de på- verkar varandra med en kraft, utan för att de kröker rumtiden i sitt närområde. När exempelvis månen kretsar runt jorden, gör den det inte på grund av någon kraft, utan för att den färdas rakt fram i den av jorden krökta rumtiden.
Det råder i dag inget tvivel om att det är Einsteins teori som är den korrekta. I många situatio- ner - som fallrörelse nära jor- dytan eller planeters banrörelse ger dock de två teorierna näs- tan identiska resultat. Eftersom det är mycket enklare att göra beräkningar enligt Newtons te- ori använder fysiker den fortfa- rande när det går. Men i extrema situationer, som i närheten av neutronstjärnor eller svarta hål, fungerar inte Newtons teori. Den kan heller inte användas för att besvara kosmologiska frågor. Därtill finns fenomen som inte alls ryms i Newtons beskriv- ning, såsom gravitationsvågor eller det faktum att tiden går olika snabbt på olika höjd.
/Sören Holst, teoretisk fy-siker, Stockholms universitet
"Eftersom det är mycket enklare att göra beräkningar enligt Newtons teori använ- der fysiker den fortfarande när det går."
+Anonymous J — 4 months ago, 1 week later, 5 months after the original post[T] [B] #673,958
·Anonymous J — 4 months ago, 26 minutes later, 5 months after the original post[T] [B] #673,960
Black or white?+Anonymous K — 4 months ago, 3 weeks later, 6 months after the original post[T] [B] #674,510
Microsoft has unveiled Majorana 1, a quantum chip designed to improve the reliability and scalability of qubits, marking a significant leap in quantum computing. The chip utilizes Majorana particles and topological conductors, a novel approach to qubit stability. With this advancement, Microsoft aims to develop a fully functional quantum computer by 2027-2029.
+Anonymous L — 4 months ago, 1 day later, 6 months after the original post[T] [B] #674,555
Neil Degrasse Tyson said once
·Fact Checker — 4 months ago, 1 hour later, 6 months after the original post[T] [B] #674,559
@674,510 (K)> Majorana 1
The hardware demonstrations currently available only demonstrate a method for readout, and do not demonstrate any quantum processing on the zero-mode. Moreover, the publicly available demonstration does not test coherence of their two-level quantum system. This is in contrast to other QPUs, which typically demonstrate both coherent quantum information and coherent logical operations on that quantum information.
(Edited 21 seconds later.)
+ducky !MwWb.dJjRc — 4 months ago, 16 hours later, 6 months after the original post[T] [B] #674,583
+FuckAlms !vX8K53rFBI — 4 months ago, 1 day later, 6 months after the original post[T] [B] #674,606
·FuckAlms !vX8K53rFBI — 4 months ago, 23 hours later, 6 months after the original post[T] [B] #674,629
+Anonymous O — 5 days ago, 3 months later, 10 months after the original post[T] [B] #676,365
FRANK AND ERNEST
MUSEUM OF SCIENCE AND HEALTH
FRANK & ERNEST ARE LOOKING AT THE HUMAN LAYOUT CHART INSIDE THE MUSEUM.
ERNEST : "THIS SAYS THE BRAIN WORKS ON ELECTRICAL IMPULSES."
FRANK : "MAYBE WE'VE GOT OUR BATTERIES INSTALLED WRONG."
MUSEUM OF SCIENCE AND HEALTH
FRANK & ERNEST ARE LOOKING AT THE HUMAN LAYOUT CHART INSIDE THE MUSEUM.
ERNEST : "THIS SAYS THE BRAIN WORKS ON ELECTRICAL IMPULSES."
FRANK : "MAYBE WE'VE GOT OUR BATTERIES INSTALLED WRONG."
+396 — 5 days ago, 5 hours later, 10 months after the original post[T] [B] #676,387
Český botanik Roezl,který byl mým vzdáleným strýcem se sice nezabýval časoprostorem ani teorií relativity,ale objevil v Peru několik vzácných orchidejí,které po něm nesou jeho jméno. Několik jich i dovezl do Evropy a USA a díky němu tak zahrady vypadají mnohem lépe.