Skip to main content

How real is Imaginary?


  • Imaginary numbers can then be represented as corresponding to positions on a vertical line: zero is again in the middle, positive imaginary numbers plotted upward, and negative imaginary numbers plotted downward. Thus imaginary numbers can be thought of as a new kind of number at right angles to ordinary real numbers. Because they are a mathematical construct, they don't need a physical realization; one can't have an imaginary number of oranges or an imaginary credit card bill.

  • One might think this means that imaginary numbers are just a mathematical game having nothing to do with the real world. From the viewpoint of positivist philosophy, however, one cannot determine what is real. All one can do is find which mathematical models describe the universe we live in. It turns out that a mathematical model involving imaginary time predicts not only effects we have already observed but also effects we have not been able to measure yet nevertheless believe in for other reasons. 


  • Einstein's classical (i.e., nonquantum) general theory of relativity combined real time and the three dimensions of space into a four-dimensional spacetime. But the real time direction was distinguished from the three spatial directions; the world line or history of an observer always increased in the real time direction (that is, time always moved from past to future), but it could increase or decrease in any of the three spatial directions. In other words, one could reverse direction in space, but not in time.On the other hand, because imaginary time is at right angles to real time, it behaves like a fourth spatial direction. It can therefore have a much richer range of possibilities than the railroad track of ordinary real time, which can only have a beginning or an end or go around in circles. It is in this imaginary sense that time has a shape.

Comments

Popular posts from this blog

How Energy conversion from coal is done?

Single generator sets of over 600 MW are now used in the UK, though there are many smaller generators in use. A 600 MW generator can supplythe average needs of over 1 million UK households. Three or four such generators are typically installed in a single large coal-fired station which isoften sited close to a coal mine, away from the city dwellers who consume the electricity. Such generators are usually driven by a compound arrangement of highpressure, intermediate-pressure and low-pressure turbines, increasing in size as the pressure decreases. Modern turbines rotate in a speed range from 1500 to 3500 r.p.m., usually 3000 r.p.m. for the UK’s 50 Hz system. For large coal-fired plant the steam pressure could be 25 megapascals (MPa) with steam temperatures of 500–600 °C to improve the thermodynamic efficiency. In nuclear reactors, which operate under less demanding conditions, the steam is superheated to about 5 MPa and 300 °C. Modern water tube boilers are complex and have ...

20 Interesting science fact (PART 2)

1/ Astronauts cannot belch - there is no gravity to separate liquid from gas in their stomachs. 2/ The air at the summit of Mount Everest, 29,029 feet is only a third as thick as the air at sea level. 3/ One million, million, million, million, millionth of a second after the Big Bang the Universe was the size of a ...pea. 4/ DNA was first discovered in 1869 by Swiss Friedrich Mieschler. 5/ The molecular structure of DNA was first determined by Watson and Crick in 1953. 6/ The first synthetic human chromosome was constructed by US scientists in 1997. 7/ The thermometer was invented in 1607 by Galileo. 8/ Englishman Roger Bacon invented the magnifying glass in 1250. 9/ Alfred Nobel invented dynamite in 1866. 10/ Wilhelm Rontgen won the first Nobel Prize for physics for discovering X-rays in 1895. 11/ The tallest tree ever was an Australian eucalyptus - In 1872 it was measured at 435 feet tall. 12/ Christian Barnard performed the first heart transplant i...

Why swiss Bank is Famous for Black Money?

Hello everyone, here we are going to talk about Swiss Bank. When a person hear the name of this bank the only thing that come to our mind is Black Money. When any kind Fraud occur we hear the name of Swiss Bank and Government also tell that he is going to bring all the black money from Swiss Bank. Swiss Bank is located  in Switzerland and was established in 1872 as Basler bankverein. According to Switzerland banking law bank officials cannot disclose the name of account holder name unless and until Swiss court order them. Swiss court give the order only when there is a criminal charge on account holder name for example money laundering, fraud etc. The account in Swiss Bank are secretive account. Anyone who open a bank account in Swiss Bank he has to complete his KYC as normal bank do. But they never reveal the identity and address of account holders name. The account is in coded digits. In bank statement the account holder name is also not disclosed to any one. Here Swi...