Physics and Philosophy Meet: the Strange Case of Poincaré
... But, the puzzle of Poincaré’s attitude having been posed, let us turn to a sketch of the history of his engagement with the problems of electrodynamics in general. He concerned himself with such problems from 1888, when he offered lectures at the Sorbonne on Maxwell’s theory (published as Part I of ...
... But, the puzzle of Poincaré’s attitude having been posed, let us turn to a sketch of the history of his engagement with the problems of electrodynamics in general. He concerned himself with such problems from 1888, when he offered lectures at the Sorbonne on Maxwell’s theory (published as Part I of ...
MU08-CHAPTER1.doc
... motivated, yet this theory will show that this categorization only is of superficial, fictive and imagined nature. We will find, that all kinds of actions by force can be related to one single universal principle. That is Newton’s second law of force, which is the base of all known forces in nature ...
... motivated, yet this theory will show that this categorization only is of superficial, fictive and imagined nature. We will find, that all kinds of actions by force can be related to one single universal principle. That is Newton’s second law of force, which is the base of all known forces in nature ...
Electricity and matter
... was the belief of the testator that any orderly presentation of the facts of nature or history contributed to the end of this foundation more effectively than any attempt to emphasize the elements of doctrine or of creed; and he therefore provided that lectures on dogmatic or polemical theology shou ...
... was the belief of the testator that any orderly presentation of the facts of nature or history contributed to the end of this foundation more effectively than any attempt to emphasize the elements of doctrine or of creed; and he therefore provided that lectures on dogmatic or polemical theology shou ...
The Confrontation between General Relativity and Experiment
... of Newtonian gravity or of GR, but of the broader idea that spacetime is curved. One elementary equivalence principle is the kind Newton had in mind when he stated that the property of a body called “mass” is proportional to the “weight”, and is known as the weak equivalence principle (WEP). An alte ...
... of Newtonian gravity or of GR, but of the broader idea that spacetime is curved. One elementary equivalence principle is the kind Newton had in mind when he stated that the property of a body called “mass” is proportional to the “weight”, and is known as the weak equivalence principle (WEP). An alte ...
Electrostatic analysis of the interactions between charged particles
... An understanding of the electrostatic interactions that exist between charged particles of dielectric materials has applications that cover many areas of chemistry, physics, biology, and engineering. Areas of interest include circumstances where charged particles might coalesce, for example, aerosol ...
... An understanding of the electrostatic interactions that exist between charged particles of dielectric materials has applications that cover many areas of chemistry, physics, biology, and engineering. Areas of interest include circumstances where charged particles might coalesce, for example, aerosol ...
Gravitation
... (Appendix A has the nomenclature. In mathematical expressions, the order of operations is as follows: multiplication, division, addition, and subtraction.) ...
... (Appendix A has the nomenclature. In mathematical expressions, the order of operations is as follows: multiplication, division, addition, and subtraction.) ...
Selective particle trapping and optical binding in the evanescent
... [5]. In the past thirty years, optical nanofibers have demonstrated an abundance of useful applications as optical interface tools [6]. Typically produced in the laboratory by simply taperdrawing commercial optical fiber over a localized heat source, the submicron cross-section combines high mode co ...
... [5]. In the past thirty years, optical nanofibers have demonstrated an abundance of useful applications as optical interface tools [6]. Typically produced in the laboratory by simply taperdrawing commercial optical fiber over a localized heat source, the submicron cross-section combines high mode co ...
abstracts_2071
... Since the ancient Greeks, and likely before them, an ongoing debate has raged between rationalism and empiricism. At the risk of some oversimplification, the two camps split as follows: The rationalists, represented first by Plato and in the 17th century by Descartes, Spinoza, and Leibnitz, view the ...
... Since the ancient Greeks, and likely before them, an ongoing debate has raged between rationalism and empiricism. At the risk of some oversimplification, the two camps split as follows: The rationalists, represented first by Plato and in the 17th century by Descartes, Spinoza, and Leibnitz, view the ...
Colloidal interactions obtained from total internal reflection
... one form or another. Examination of the definition of colloidal particles makes the importance of colloidal systems clear. Looking up the word colloid in Encyclopædia Britannica one finds the following description of the word colloid any substance consisting of particles substantially larger than at ...
... one form or another. Examination of the definition of colloidal particles makes the importance of colloidal systems clear. Looking up the word colloid in Encyclopædia Britannica one finds the following description of the word colloid any substance consisting of particles substantially larger than at ...
VIII
... proteins by means of ultracentrifugation - at low rotation frequencies the proteins with the greatest molecular masses precipitate, increase of rotation speed causes precipitation of more lighter fractions etc. It is also possible to determine the molar masses of proteins (or micellar masses of coll ...
... proteins by means of ultracentrifugation - at low rotation frequencies the proteins with the greatest molecular masses precipitate, increase of rotation speed causes precipitation of more lighter fractions etc. It is also possible to determine the molar masses of proteins (or micellar masses of coll ...
Using Feedback Control of Microflows to Independently Steer Multiple Particles
... particles by correcting for particle deviations—at each time we create a fluid flow to move the particles from where they are to where they should be. This allows very simple devices, actuated by routine methods, to replicate the planar steering capabilities typically requiring laser tweezers. We ha ...
... particles by correcting for particle deviations—at each time we create a fluid flow to move the particles from where they are to where they should be. This allows very simple devices, actuated by routine methods, to replicate the planar steering capabilities typically requiring laser tweezers. We ha ...
faraday`s field
... context that they were, eventually, used. The electrostatic lines of force, as Faraday had found, were always polar due to the polarization of ‘contiguous particles’ by which the electrostatic forces were transmitted; they always had ‘ends,’ or poles. Conversely, Faraday had found it impossible to s ...
... context that they were, eventually, used. The electrostatic lines of force, as Faraday had found, were always polar due to the polarization of ‘contiguous particles’ by which the electrostatic forces were transmitted; they always had ‘ends,’ or poles. Conversely, Faraday had found it impossible to s ...
The theory of dipoles vortex Author: Prof. Vasile Tudor, The
... elementary particles are mirrored reflection of the properties of the appropriate antiparticules and can be explained by reference to the dipoles vortex in the two universes in which universal particles involved entering (or leaving) through a pole and leaving (or entering) through the other pole wi ...
... elementary particles are mirrored reflection of the properties of the appropriate antiparticules and can be explained by reference to the dipoles vortex in the two universes in which universal particles involved entering (or leaving) through a pole and leaving (or entering) through the other pole wi ...
A generalized mass transfer law unifying various particle transport
... turbulent boundary layer. Their model agrees well with experiments in pipe flows. Davies [13] made an apparently more plausible assumption that the free flight velocity is the same as the local r.m.s. velocity of the fluid, but his computed deposition velocities were lower by some two orders of magn ...
... turbulent boundary layer. Their model agrees well with experiments in pipe flows. Davies [13] made an apparently more plausible assumption that the free flight velocity is the same as the local r.m.s. velocity of the fluid, but his computed deposition velocities were lower by some two orders of magn ...
Preparation and Characterization of Novel Microcapsules
... be protected from the environmental conditions (UV, oxygen, and moisture) either to avoid the side effect of the active or to prolong the storage life time of the active. Other applications are when controlled release, or prevented chemical reaction between the active and surrounding is required. Fo ...
... be protected from the environmental conditions (UV, oxygen, and moisture) either to avoid the side effect of the active or to prolong the storage life time of the active. Other applications are when controlled release, or prevented chemical reaction between the active and surrounding is required. Fo ...
9. Best Explanation Examples
... and then again (p. 422) It is so easy to hide our ignorance under such expressions as the "plan of creation," "unity of design," &c., and to think that we give an explanation when we only restate a fact. To tease out Darwin’s objection, imagine that we make up a huge list of species and their traits ...
... and then again (p. 422) It is so easy to hide our ignorance under such expressions as the "plan of creation," "unity of design," &c., and to think that we give an explanation when we only restate a fact. To tease out Darwin’s objection, imagine that we make up a huge list of species and their traits ...
Continuum modeling of hydrodynamic particle–particle
... On the other hand, while the effective-medium theories do treat active transport, they have rarely been used to analyze microfluidic systems. In this work, we present a continuum model of high-density suspensions in microchannels exposed to an external force causing particle migration. Based on the ...
... On the other hand, while the effective-medium theories do treat active transport, they have rarely been used to analyze microfluidic systems. In this work, we present a continuum model of high-density suspensions in microchannels exposed to an external force causing particle migration. Based on the ...
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... channel overlaying a microfabricated array of interdigitated electrodes, through which we flowed particles perpendicular to the axis of the electrodes (Fig. 1a). In operation, an AC voltage was applied across the electrodes, polarizing particles and exerting a negative dielectrophoretic force; this ...
... channel overlaying a microfabricated array of interdigitated electrodes, through which we flowed particles perpendicular to the axis of the electrodes (Fig. 1a). In operation, an AC voltage was applied across the electrodes, polarizing particles and exerting a negative dielectrophoretic force; this ...
PDF only - at www.arxiv.org.
... Meteoroids are particles with natural origin that are present in the interplanetary space, originating generally from comets or asteroids. Meteoroids smaller than 1 mm are usually referred to as micrometeoroids. The precession of a satellite orbit and the tilt of the Earth´s equatorial plane with re ...
... Meteoroids are particles with natural origin that are present in the interplanetary space, originating generally from comets or asteroids. Meteoroids smaller than 1 mm are usually referred to as micrometeoroids. The precession of a satellite orbit and the tilt of the Earth´s equatorial plane with re ...
Development of three-dimensional integrated microchannel
... The manipulation technique with electrical method uses electrokinetic forces to drive particles such as cells and fluid to realize the particles’ movement. After voltage and electrical current are applied to electrodes, the particles are driven by the electrokinetic forces which are dielectrophoreti ...
... The manipulation technique with electrical method uses electrokinetic forces to drive particles such as cells and fluid to realize the particles’ movement. After voltage and electrical current are applied to electrodes, the particles are driven by the electrokinetic forces which are dielectrophoreti ...
The Colloidal State Introduction: A colloid is one of the three primary
... Origin of charge in colloidal particles: The charge on a colloidal particle is developed due to the following reasons: i) Self-dissociation: Colloidal electrolytes such as sodium stearate (soap) dissociate in solution giving C17H35COO- and Na+ ions. The hydrocarbon parts of the ions have marked affi ...
... Origin of charge in colloidal particles: The charge on a colloidal particle is developed due to the following reasons: i) Self-dissociation: Colloidal electrolytes such as sodium stearate (soap) dissociate in solution giving C17H35COO- and Na+ ions. The hydrocarbon parts of the ions have marked affi ...
Arbitrary Steering of Multiple Particles Independently in an Electro-Osmotically Driven Microfluidic System
... implantable miniaturized systems that can then analyze, monitor, chemically treat, and inject biological materials. Specifically, there is a need to deliver particles to localized sensors, to separate particles from each other for further testing, to steer particles into each other to test particle- ...
... implantable miniaturized systems that can then analyze, monitor, chemically treat, and inject biological materials. Specifically, there is a need to deliver particles to localized sensors, to separate particles from each other for further testing, to steer particles into each other to test particle- ...
Particle Rezoning for Multidimensional Kinetic Particle-In
... Smirnov test to verify that the particle distribution is preserved. In practice, this is not easily achieved. In fluid PIC codes, the first criterion is the only one to be applied, and general schemes for particle rezoning can be derived [8]. In kinetic PIC codes, the computational particles sample ...
... Smirnov test to verify that the particle distribution is preserved. In practice, this is not easily achieved. In fluid PIC codes, the first criterion is the only one to be applied, and general schemes for particle rezoning can be derived [8]. In kinetic PIC codes, the computational particles sample ...
MU08-CHAPTER7.doc
... neutron is estimated in the range of 12 fermi, even if these results still are very unsure (Observe ,the charging radius, not the spatial radius or extension). In spite of intensive efforts, there is still no clear idea of the building and structure of an atomic core, even if there exists several m ...
... neutron is estimated in the range of 12 fermi, even if these results still are very unsure (Observe ,the charging radius, not the spatial radius or extension). In spite of intensive efforts, there is still no clear idea of the building and structure of an atomic core, even if there exists several m ...
Le Sage's theory of gravitation
Le Sage's theory of gravitation is a kinetic theory of gravity originally proposed by Nicolas Fatio de Duillier in 1690 and later by Georges-Louis Le Sage in 1748. The theory proposed a mechanical explanation for Newton's gravitational force in terms of streams of tiny unseen particles (which Le Sage called ultra-mundane corpuscles) impacting all material objects from all directions. According to this model, any two material bodies partially shield each other from the impinging corpuscles, resulting in a net imbalance in the pressure exerted by the impact of corpuscles on the bodies, tending to drive the bodies together. This mechanical explanation for gravity never gained widespread acceptance, although it continued to be studied occasionally by physicists until the beginning of the 20th century, by which time it was generally considered to be conclusively discredited.