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 oxygenated and deoxygenated blood reflects light by different amounts, we can study which areas are more active ( i. e., those that have more oxygenated blood ).

Since the development of armored warfare the distinction between light and heavy armor has persisted basically along the same lines.

Since light is an oscillation it is not affected by travelling through static electric or magnetic fields in a linear medium such as a vacuum.

Since the visible spectrum of light is composed of wavelengths between 390 and 750 nanometers ( nm ), if the droplet sizes in the emulsion are below about 100 nm, the light can penetrate through the emulsion without being scattered.

Since this implies that one particle is communicating with the other instantaneously across space, i. e. faster than light, this is the " paradox ".

Since frequency and wavelength are inversely proportional, this is equivalent to saying that the frequency of the light is reduced towards the red part of the light spectrum, giving this phenomenon the name redshift.

Since EtBr stained DNA is not visible in natural light, scientists mix DNA with negatively charged loading buffers before adding the mixture to the gel.

Since the 1980s, various experiments have verified that it is possible for the group velocity of laser light pulses sent through specially prepared materials to significantly exceed the speed of light in vacuum.

Since the working life of a hearse is generally one of light duty and short, sedate drives, hearses remain serviceable for a long time ; hearses 30 years old or more may still be in service, although some funeral homes replace them at least once a decade.

Since absorption is cumulative, the color effect intensifies with increasing thickness or if internal reflections cause the light to take a longer path through the ice.

Since Brighid represented the light half of the year, and the power that will bring people from the dark season of winter into spring, her presence was very important at this time of year.

Since the early 1980s, a global dark-sky movement has emerged, with concerned people campaigning to reduce the amount of light pollution.

Since not everyone is irritated by the same lighting sources, it is common for one person's light " pollution " to be light that is desirable for another.

Since relativity postulates that the speed of light is the same for all observers, the Lorentz transformation must preserve the spacetime interval between any two events in Minkowski space.

Since the early 1990s, a light has been fixed to it about one-third of the way up.

Since 1983, it has been defined as " the length of the path travelled by light in vacuum during a time interval of of a second.

Since fluorescence emission differs in wavelength ( color ) from the excitation light, an ideal fluorescent image shows only the structure of interest that was labeled with the fluorescent dye.

Since any fluorescence image is made up of a large number of such small fluorescent light sources, the image is said to be " convolved by the point spread function ".

Since he was the light of the world, where was this light, they asked, when he was in the womb of the Virgin?

Since the writer had not noticed this characteristic in married students scattered throughout the various sections previous to this experiment, nor, as a matter of fact, in those who were continuing in `` single sections '', he can only conclude that there must have been something `` contagious '' within the specific group which caused this to occur.

Since the scattering angle is uniquely determined for a given and, the number of particles scattered into an angle between and must be the same as the number of particles with associated impact parameters between and.

Since their introduction to the west in the early 1990s, Hall thrusters have been the subject of a large number of research efforts throughout the United States, France, Italy, Japan, and Russia ( with many smaller efforts scattered in various countries across the globe ).

Since most of these nations did not have a prison system, convicts were often sold or used in the scattered local domestic slave market.

Since the consolidation of the three municipalities of Hafslo, Jostedal and Luster in 1963, the area has been characterized by scattered rural settlements and large distances between these settlements.

Since blue light is at the short wavelength end of the visible spectrum, it is more strongly scattered in the atmosphere than long wavelength red light.

Since the atoms are spatially distributed in the unit cell, there will be a difference in phase when considering the scattered amplitude from two atoms.

Since most gastroliths were scattered when the animal died and many entered a stream or beach environment, some gastroliths show a mixture of these wear features.

Since communities of Sikh disciples were scattered all over northern India, copies of the holy book needed to be made for them.

Since 2004 it has housed all the University's operations in Cornwall, previously scattered across a number of different sites.

Since there is little difference in the neutrons scattered by hydrocarbons or water, the porosity measured gives a figure close to the true physical porosity whereas the figure obtained from electrical resistivity measurements is that due to the conductive formation fluid.

Since scattered light leaves the sample in all directions the probes that carry the scattered light back to the detector in Raman spectroscopy may be placed at any angle.

Since that time, the character has undergone several revivals and made scattered television and video appearances, most notably in The Richie Rich Show ( 1996 ) and Baby Huey's Great Easter Adventure ( 1998 ).

") Since language is not restricted by state or regional boundaries, the labels often include qualifying language, such as " chiefly N Eng ," or " scattered, but most freq Sth, S Midl.

Since then, the sparse group has scattered over a region about 30 by 18 light-years, whose center is currently some 80 light-years away, making it the closest cluster-like object to Earth.

Since the work of Malfatti, there has been a significant amount of work on methods for constructing Malfatti's three tangent circles ; Richard K. Guy writes that the literature on the problem is " extensive, widely scattered, and not always aware of itself ".

Since then, Blaze released three more albums, alongside a few scattered compilations of earlier productions and works and countless singles.

Since it is too powerful for any single being to possess, it has been split into six different segments and scattered across space and time, disguised by the raw elemental power within them into any shape or size.

Since then over 60 murals depicting the area's rich history and beautiful natural scenery are painted on walls scattered throughout the town and buildings along the roadside.

Since the 1870s, there was debate in the council over the housing of the borough offices: all departments were currently scattered around the town, making co-ordination and timely response fairly difficult, with the old Audit House opposite Holy Rood Church now being totally inadequate.

Since low absolute magnitude objects are more common than brighter ones, and since these dimmer galaxies are more likely to be below the cutoff line and scattered up, while the brighter ones are more likely to be above the line and scattered down, an over-representation of the lower luminosity objects result.