Explain the four fundamental forces of the universe Research Paper

Explain the four fundamental forces of the universe - Research Paper Example ‎ The basic force that makes up our Universe is the force of gravity, which has the widest reach, yet it is the weakest of all four in its actual magnitude. It was the first force to be discovered, but it is the least understood of all. Gravity in its nature is purely attractive, it travels through even a void of empty space to bring and create attraction between the two masses bringing them towards each other. This is the force that keeps the planets including Earth orbiting around the Sun, as well as the Moon that orbits around the Earth. The force carrying particle responsible for gravity is known as gravitation. The theory of general relativity defines gravitation as being the curve of space-time engulfing an object that has mass. This curvature then makes a situation in which the path with least energy is in direction of the other object with mass. From normal person’s perspective it may seem unlikely that gravity is defined as being a weak force as it can operate across great distances. This however holds true as on the subatomic level the force that gravity exerts is a much weaker than electromagnetic forces (Sukys 51). The electromagnetism is interaction between the particles carrying an electrical charge. The magnetic and electric effects like interaction of the bar magnets or repulsion of electrical charges are caused by the electromagnetic force. The charged particles that at rest have an interaction through the electrostatic forces, in motion use both the magnetic as well as electrical forces to interact. The magnetic and electrical forces were seen to be different for quite some time; eventually in 1864 they were finally unified by work of James Maxwell in what came to be known as Maxwell’s equations. Photon is the force carrying particle responsible for transmitting the electromagnetic force. Electromagnetism was consolidated with the quantum physics

Theories argue Essay Example | Topics and Well Written Essays - 500 words

Theories argue - Essay Example Three most important and frequently addressed theories related to the aging process are Theory of disengagement, Activity Theory and Continuity Theory (Bengtson, Silverstein, & Putney, 2009). This researcher finds that Activity Theory has defined the process of aging more effectively as compared to other two theories. The theory was developed in 1953 by an American sociologist Havighurst (Schulz, 2006). This theory holds that to remain lively and participate in societal activities are key factors of satisfaction for aging people. Physical and intellectual activities are important for successful aging. The theory proposes that in order to maintain a positive self-image, older members need to develop new interests, roles, hobbies, and relationships (Schulz-Aellen, 1997). This theory would explain adequately why aging people feel encouraged continue with their middle-age lifestyles by denying the limitations of old age and why they make attempts to sustain that lifestyle over a longer duration. According Havighurst activity is always preferable to inactivity since it increases the chances of the well-being of personality on a number of levels. This theory also explains why post-industrial society allowed its older members to participate in meaningful activities. The theory incorporates an improvement in the general health and prosperity of older people. In contrast to the Activity Theory, the Disengagement theory comes across as a more controversial theory. According to this theory aging is process of regular withdrawal between society and the subject aging individual. The theory holds that in growing older, withdrawal or disengagement can be considered to be a natural or universal process. In all cultures and societies this process is acceptable to elders. According to this theory there should be a social equilibrium that will promote self-reflection for elders. Old members of the society should be free from societal