The heliocentric model was generally rejected by the ancient philosophers for three main reasons:
1) If the Earth is rotating about its axis, and orbiting around the Sun, then the Earth must be in motion. However, we cannot ``feel'' this motion. Nor does this motion give rise to any obvious observational consequences. Hence, the Earth must be stationary.
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2) If the Earth is executing a circular orbit around the Sun then the positions of the stars should be slightly different when the Earth is on opposite sides of the Sun. This effect is known as parallax. Since no stellar parallax is observable (at least, with the naked eye), the Earth must be stationary. In order to appreciate the force of this argument, it is important to realize that ancient astronomers did not suppose the stars to be significantly further away from the Earth than the planets. The celestial sphere was assumed to lie just beyond the orbit of Saturn.
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3)The geocentric model is far more philosophically attractive than the heliocentric model, since in the former model the Earth occupies a privileged position in the Universe.
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A stereotype is a belief about a certain group of people. Prejudice is a feeling about a person based on their membership in a group. Both stereotypes and prejudice can be either positive or negative. Discrimination is an action that denies the rights of a person due to their membership in a group.
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Answer:
For example: 1) The the judicial laws and regulations should be updated in the gap of some years in order to prevent the flaws in those laws and regulations. 2) The rules related with the political sectors are also need improvements in order to prevent the core political corruption.
One or more unwanted ionic pollutants are eliminated from water using the ion exchange technique by exchanging them with a less disagreeable or non-objectionable ionic material.
The engineers of ion exchange products need to know which items are soluble so that the the pollutant can be extracted from the water by dissolving the ionic pollutant in a suitable solvent or exchange product. In order to identify the solvent, the engineer must be aware of the physical and chemical properties of the pollutant.
The exchanged material and the contaminant both need to be dissolved and have the same kind of electrical charge (positive or negative). A common instance of ion exchange is the "water softening" procedure, which lowers the amount of calcium and magnesium in the water.
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Nowadays, an increasing number of people with health problems are using alternative medicines and treatments instead of visiting their normal doctor. This development can both be a positive as well as a negative one.
If we people distance themselves with the high power medicines that these doctors are giving they can still protect their other body parts form being impacted by the side effects of these hard medicines. Turning to other ways may give slow results yet they may protect from a long term ailment.
On the other hand, this may not be that good because if people try treating ailments their own way, they may neglect the serious ones, which require immediate diagnosis and treatment.
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