Since their invention and subsequent proliferation in the mid-20th Century, ballpoint pens have proven to be a versatile art medium for professional artists as well as amateur doodlers.

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 phase velocity is lower in the second medium ( v < sub > 2 </ sub > < v < sub > 1 </ sub >), the angle of refraction θ < sub > 2 </ sub > is less than the angle of incidence θ < sub > 1 </ sub >; that is, the ray in the higher-index medium is closer to the normal.

Since the lasing medium was fairly small, a single bomb could host a number of them and attack multiple ICBMs in a single burst.

Since the 1950s, television has been the main medium for molding public opinion.

Since the 1950s, television has been the main medium for molding public opinion.

Since the vacuum offered no medium for an electric fluid to travel, this discovery could only be explained via a particle carrying a negative charge and moving through the vacuum.

Since one cannot completely ignore the bit error-rate of the medium, each switching node needs to implement error detection to avoid wasting bandwidth due to the transmission of erred frames.

Since the refractive index for a given medium changes depending on the wavelength of light, Brewster's angle will also vary with wavelength.

Since the velocity is lower in the second medium ( v < sub > 2 </ sub > < v < sub > 1 </ sub >), the angle of refraction θ < sub > 2 </ sub > is less than the angle of incidence θ < sub > 1 </ sub >; that is, the ray in the higher-index medium is closer to the normal.

Since 1993, Madeira produced from Tinta Negra Mole grapes is legally restricted to use generic terms on the label to indicate the level of sweetness as seco ( dry ), meio seco ( medium dry ), meio doce ( medium sweet ) and doce ( sweet ).

Since pulmonary complications are related to the amount of medium reaching the lungs area, the early recognition of lymphovenous communications is a great significance to the lymphangiographer.

Since the spread of broadband, CD and DVD images became a common medium for Linux distributions.

Since 2002, 30 % of the land in the town is zoned for residential use, the majority of which ( 22 %) is classed as medium density residential, defined as a single family suburban environment.

Since the mid-1990s, Goodhue, like many Midwestern municipalities with medium to large elevator operations, has seen its housing base and population grow.

Since the rate of stimulated emission is dependent on the amount of light entering the medium, the amount of energy stored in the gain medium increases as the medium is pumped.

Since most people have medium voices, they must be assigned to a part that is either too high or too low for them ; the mezzo-soprano must sing soprano or alto and the baritone must sing tenor or bass.

Since the advent of computer-aided design ( CAD ), engineering drawing has been done more and more in the electronic medium with each passing decade.

Since the 1960s, media critics have claimed that the boundaries between " programming " and " advertisements " have been eroded to the point where the line is blurred nearly as much as it was during the beginnings of the medium, when almost all individual television shows were sponsored entirely by a single corporation ( the model which was carried over from old-time network radio ).

( Since the time-span of the nation-state coincides roughly with the separate existence of the United States as an independent entity, it is perhaps natural for Americans to think of the nation as representative of the highest form of order, something permanent and unchanging.

Since 1954 the Negro's desire for social justice has led to an ironically anarchical rebellion.

Since the hazards of poor communication are so great, p can be justified as a habitable site only on the basis of unusual productivity such as is made available by a waterfall for milling purposes, a mine, or a sugar maple camp.

Since the slogans have little application to reality and are sanctimonious to boot, the applause is faint even in areas of the world where we should expect to find the greatest affection for free government.

Since Laos is of no more purely military value to Moscow itself than it is to Washington, this approach might be expected to head off Mr. Khrushchev for the moment.

Since little is known about autism, and almost nothing has been written for the layman, we'd like to share one experienced mother's comments.

Since the goal of our international planners is a World Government, this Atlantic Community would mark a giant step in that direction for, once American economic autonomy is absorbed, a larger grouping is a question of time.

Since she could not act, one part suited her as well as any other, and so she was the first person to offer Mr. Lincoln a glass of water, holding it up to the box, high above her head, to Miss Harris, who had asked for it.

`` Since the war I have seen the way the Germans have behaved and I think, Holy Mother, we have behaved like this for hundreds of years.

Since that time the demands of the citizens for new and expanded services have placed financial burdens on the state which could not have been foreseen in earlier years.

Since accurate base maps are necessary for any planning program, the first step taken by the planning division to implement the long-range state plan has been to prepare two series of base maps -- one at a scale of 1 inch to a mile, and the second a series of 26 sheets at a scale of 1 inch to 2000 feet, covering the entire state.

Since broadcast frequencies are very limited in number, these objectives are to some extent inconsistent in that not all of them can be fully realized, and to the extent that each is realized, there is a corresponding reduction of the possibilities for fullest achievement of the others.

Since then, there has been a notable increase in the number of stations and also the accumulation of additional data and the development of new techniques for using it, leading to a better understanding of propagation phenomena.

Since April 15, 1962, is on Sunday your return for the calendar year 1961 will be timely filed if it is filed on or before Monday, April 16, 1962.

Since you contributed more than half of his support, you may also claim an exemption for him on your return.

Since he can neither accept nor reject them all, he must be governed by the time and energy available for his prime professional obligations.

Since it requires only five players, it would seem to fall into the category of chamber music -- yet it calls for a double bass, an instrument generally regarded as symphonic.

Since our viewpoints in this respect coincided precisely, we present the fruits of our efforts herewith as a single social code for pool owners.

Since SAAMI's conception in 1926, and more specifically since the adoption of the Shooting Development Program in 1954, millions of dollars and promotional man-hours have gone into the development of more places to shoot for more youths and adults.

Since charges are relatively the same, reserving a car before you leave for Europe will assure you of having one on tap when you want it.

Since most European cars average more miles per gallon of gasoline than American cars, it naturally follows that the cost per kilometer for these models will be less, but the greater seating capacity of the large American cars will equalize this, provided your group is sufficiently large to fill a 7-passenger limousine.

Since practical washing procedures are both lengthy and expensive, a number of laboratory tests have been developed for the numerical evaluation of detergents.

Since the circulating thyroid hormones are the amino acids thyroxine and tri-iodothyronine ( cf. Section C ), it is clear that some mechanism must exist in the thyroid gland for their release from proteins before secretion.

Since Af and P divides Af for Af, we have Af.

Since Af are linearly independent functions and the exponential function has no zeros, these R functions Af, form a basis for the space of solutions.