Since we can neither undo nor redo the past, we are limited to the events of today and tomorrow.

Since a coulomb is approximately equal to elementary charges ( such as electrons ), one ampere is approximately equivalent to elementary charges moving past a boundary in one second, or the reciprocal of the value of the elementary charges in coulombs.

Since the 1950s, this type of fiction has to a large extent merged with science fictional tropes involving cross-time travel between alternate histories or psychic awareness of the existence of " our " universe by the people in another ; or ordinary voyaging uptime ( into the past ) or downtime ( into the future ) that results in history splitting into two or more time-lines.

Since 1990, Bulgaria has an unstable party system, in the past two decades differently dominated by the post-communist Bulgarian Socialist Party or by the right Union of Democratic Forces and recently by the new right-oriented party-Citizens for European Development of Bulgaria.

Since the Universe has a finite age, and light travels at a finite speed, there may be events in the past whose light has not had time to reach us.

Since the league began allowing teams to use an alternate jersey, the Cowboys ' alternates have been primarily blue versions of past jerseys and the Cowboys have generally had success when wearing these blue alternates.

Since 1938, Encyclopædia Britannica, Inc. has published annually a Book of the Year covering the past year's events, which is available online back to the 1994 edition ( covering the events of 1993 ).

Since history and memory ( representations of or belief about the past ) are distinct in all philosophy and ontology from plan, vision or intent ( representations of or will to change the future ), statements that confuse these are category errors: No statement about history or memory can imply a similar statement about a plan or vision or intent, nor vice versa-a distinction sometimes credited to Hume who distinguished also the morality of a statement from its truth.

Since the 1950s, hydrology has been approached with a more theoretical basis than in the past, facilitated by advances in the physical understanding of hydrological processes and by the advent of computers and especially geographic information systems ( GIS ).

Since the responsibilities of the NNSC have been much reduced over the past few years, only five people are still part of the Swiss delegation, which is located near the Korean DMZ.

Since in the past core memory was at a premium, only highly used programs ran 100 % of the time as core resident, most ran as file resident.

Since Darby had described this scenario many times in the past, Pat did not take him seriously.

Since 1989, in recognition that the responsibility of reporting the State of the Union formally belongs to the president who held office during the past year, newly inaugurated Presidents have not officially called their first speech before Congress a " State of the Union " message.

Since independence, urbanization has sprawled eastward past Pikine, a commuter suburb whose population ( 2001 est.

Since our present choices and acts, under determinism, are the necessary consequences of the past and the laws of nature, then we have no control over them and, hence, no free will.

Since 1975, investments grew by 10 % in the past year and had been targeted for development.

Since the middle of the 19th century, some monarchists have stopped defending monarchy on the basis of abstract, universal principles applicable to all nations, or even on the grounds that a monarchy would be the best or most practical government for the nation in question, but on local symbolic grounds that they would be a particular nation's link to the past.

Since 1911, a railway ( formerly part of the St. Gotthard main route ) runs along its eastern shore past Walchwil to Arth at its south end, which was connected initially by a steam tramway with the Arth-Goldau station of the St Gotthard line.

Since E3 was closed to the general public, guest invitations have been widely extended to game-specific fansites, blogs, wikis, forum members and other enthusiasts who likely would have attended in the past.

Since Molotov was the most senior of Stalin's collaborators still alive and had played a leading role in the purges, it became obvious that Khrushchev's examination of the past would probably result in Molotov's fall from power.

Since we can speak of a thing in the past, it must still exist ( in some sense ) now and from this concludes that there is no such thing as change.

Since then, many of the Lantern FM team, past and present, have reunited to create The Voice, a new local radio station broadcasting fron Barnstaple, on DAB and online and working towards being able to broadcast on FM once again.

Since 1989, many elderly Baltic Germans, or their descendants, have taken holidays to Estonia and Latvia to look for traces of their own past, their ancestral homes, and their family histories.

Since then they did not take place every eight years as in the past, but every four years, one year prior to the Olympic Games, presumably end-August.

Since Britain, France and the Soviet Union were also engaged in recruiting these scientists, the Joint Intelligence Objectives Agency ( JIOA ) wished to deny their services to other powers, and therefore altered or concealed the records of their Nazi past and involvement in war crimes.

Since Mrs. Calhoun remembered only that the marriage had been in the spring, he started to plod through several months.

Since then commercial interest in mouthwashes has been intense and several newer products claim effectiveness in reducing the build-up in dental plaque and the associated severity of gingivitis ( inflammation of the gums ), in addition to fighting bad breath.

Since 1991, several thousand students from 21 countries have come to Achill to study and participate in ongoing excavations.

Since its disappearance from the Biblical narrative, there have been a number of claims of having discovered or of having possession of the Ark, and several possible places have been suggested for its location.

Since then, with several relaunches, an increase in funding and resources from the BBC and improvements in digital television technology, the channel has been able to diversify content, with two minute looped bulletins available to view via BBC Red Button, BBC News Online and the BBC's mobile website, alongside individual weather and sport bulletins.

Since 1916, there have been several different nutrition guidelines issued by the United States government, eventually leading up to the food pyramid.

Since several elements are gases at commonly encountered temperatures, their densities are usually stated for their gaseous forms ; when liquefied or solidified, the gaseous elements have densities similar to those of the other elements.

Since its construction, the tunnel has faced several problems.

Since its arrival in 1974, what is known as Danza Azteca in the U. S., ( and known by several names in its homeland of the central States of Mexico: danza Conchera, De la Conquista, Chichimeca, and so on.

Since Chinese traditional thought focuses more on ethics rather than metaphysics, it has developed several schools distinct from the originating Indian schools.

Since 1987, the CRTC has been involved in several controversial decisions:

Since Engelbart introduced the keyset, several different designs have been developed based on similar concepts.

Since these first accounts, Bulgarian authorities had organized several population censuses: 1892, 1900, 1905, 1910, 1920, 1926, 1934, 1946, 1956, 1965, 1975, 1985, 1992, 2001 and 2011.

Since the 1990s, several novel classes of antiemetics have been developed and commercialized, becoming a nearly universal standard in chemotherapy regimens, and helping to successfully manage these symptoms in a large portion of patients.

Since then several beta keys have been handed out to those who have completed an online survey.

Since then the standard has been enhanced several times with added features.

Since his university retirement Husserl had " worked at a tremendous pace, producing several major works.

Since life began on Earth, several major mass extinctions have significantly exceeded the background extinction rate.

Since then, there have been several issues of agreement as well as of dispute.

Since Everquest's release, Sony Online Entertainment has added several EverQuest-related games.

Since the 1980s, several cities have re-introduced it.

Since the turn of the 21st century, several additional professionals are now routinely listed in the production credits on most major motion pictures.

Since they are based on several independent sets of measurements taken decades apart by different observers with different instruments, systematic errors may have influenced them.

" Since these tablets predate the Sulbasutras period by several centuries, taking into account the contextual appearance of some of the triples, it is reasonable to expect that similar understanding would have been there in India.

Since 1994, Lineker has featured in several television commercials for Walkers Crisps.