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The first two conflicts with observations above were explained by Einstein's theory of general relativity, in which gravitation is a manifestation of curved spacetime instead of being due to a force propagated between bodies. In Einstein's theory, energy and momentum distort spacetime in their vicinity, and other particles move in trajectories ...
Fisher defines love as composed of three stages: attraction, romantic love, and attachment. Romantic relationships may exist between two people of any gender, or among a group of people, as in polyamory. On the basis of openness, all romantic relationships are of 2 types: open and closed.
Interpersonal attraction, as a part of social psychology, is the study of the attraction between people which leads to the development of platonic or romantic relationships. It is distinct from perceptions such as physical attractiveness , and involves views of what is and what is not considered beautiful or attractive.
Sexual desire is typically a component of passionate love. Passionate love is not limited to sexual attraction, however. It is a way for couples to express feelings of nurture, dominance, submission, self-actualization, etc. [9] Passionate love is considered the "hot" component of love because of the strong presence of arousal between two ...
Social group – consists of two or more humans who interact with one another, share similar characteristics and collectively have a sense of unity. [1] By this definition, a society can be viewed as a large group, though most social groups are considerably smaller. Dyad – group of two people. "Dyadic" is an adjective used to describe this ...
The most basic Feynman diagram for QED interaction between two fermions. The Coulomb potential admits continuum states (with E > 0), describing electron-proton scattering, as well as discrete bound states, representing the hydrogen atom. [31] It can also be derived within the non-relativistic limit between two charged particles, as follows:
For two pairwise interacting point particles, the gravitational potential energy is the work done by the gravitational force in bringing the masses together: = =, where is the displacement vector between the two particles and denotes the scalar product. Since the gravitational force is always parallel to the axis joining the particles, this ...
The equivalence between mass and energy, as expressed by the formula E = mc 2, is the most famous consequence of special relativity. In relativity, mass and energy are two different ways of describing one physical quantity. If a physical system has energy, it also has the corresponding mass, and vice versa.