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# Nature of Science.

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Nature of Science Logical Estimations "No measure of experimentation can ever demonstrate me right; a solitary test can demonstrate me off-base." ~Albert Einstein Size of Earth Eratosthenes measured the extent of the earth in 235 BC
Transcripts
Slide 1

Nature of Science

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Scientific Measurements âNo measure of experimentation can ever demonstrate me right; a solitary test can demonstrate me wrong.â ~Albert Einstein

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Size of Earth Eratosthenes measured the world\'s extent in 235 BC Calculated the outline of earth by looking at shadows at neighborhood twelve

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Eratosthenesâ Method Determine edge between sunâs beams and vertical This point is equivalent to the edge between the two range vectors 7.1 o/360 o = 1/50 Distance in the middle of Syene and Alexandria known not 800 km 50*800 km = 40,000 km

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Size of the Moon Aristarchus decided the moon\'s span in 240 BC Eclipse of moon Shadow of earth at moonâs separation has decreased by 1 moon width Shadow was 2.5 X the moonâs breadth Earthâs distance across is along these lines 3.5 X moonâs breadth Moon breadth = 2*6,370 km/3.5 = 3640 km

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Distance to Moon Once Aristarchus had assessed the distance across of the moon (to inside 5% of the present acknowledged quality) the above system was utilized to compute the separation to the moon 110*3640 km = 400,400 km

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Distance to Sun Once earth-moon separation is known Right triangle trigonometry permits the world\'s determination sun separation Aristarchus measured the edge X to be 87 o Actual worth is 89.8 o (hard to quantify) Sun is 400 X more remote than moon Aristarchus evaluated 20 X earth-moon separation

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Size of the Sun Pinhole camera Sunâs distance across is 150,000,000 km/110 = 1,360,000 km

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Pinhole Camera Pinhole camera can be utilized to securely see an incomplete shroud Spaces between leaves go about as pinholes amid overshadowing

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Science Terms Fact â a nearby assention by able eyewitnesses â truths can change Hypothesis â must be expressed in a manner that it can be refuted Theory â a blend of a huge assemblage of data incorporating all around tried and checked theories

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Scientific Hypotheses Scientific Hypothesis Must be testable Must be falsifiable Our universe is encompassed by another, bigger universe, with which we can have truly no contact. Not testable There are other possessed planets in the universe. Not falsifiable The moon is made of green cheddar. Testable & Falsifiable

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Check Yourself Which of these is an investigative theory? Iotas are the littlest particles of matter that exist. Space is saturated with a quintessence that is imperceptible. Albert Einstein was the best physicist of the twentieth century.

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Check Yourself Which of these is a logical theory? Iotas are the littlest particles of matter that exist. Space is saturated with a pith that is imperceptible. Albert Einstein was the best physicist of the twentieth century.

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Scientific Method There are numerous experimental strategies â however for the most part Recognize an inquiry Form a testable speculation Make forecasts Test expectations Formulate least complex gen

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