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Scientific Measurement

Scientific Measurement. Bell Ringer. What are the two different types of microscopes?. What are these?. Conversions. K H D b d c m. Group Challenge. 7m = _____ Kilometers 2.3L = _____ milliliters 1750g = _____Kilograms 250cm = _____ Meters. History of the Microscope.

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Scientific Measurement

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  1. Scientific Measurement

  2. Bell Ringer What are the two different types of microscopes?

  3. What are these?

  4. Conversions • K H D b d c m

  5. Group Challenge • 7m = _____ Kilometers • 2.3L = _____ milliliters • 1750g = _____Kilograms • 250cm = _____ Meters

  6. History of the Microscope Invented between 1590-1600 Robert Hooke-1665 viewed cells for the first time Anton van Leewenhoek- first to describe bacteria

  7. Microscopes • Light Microscope – light passes through one or more lenses to produce an enlarged image of a specimen.

  8. Light Microscope • Use two lenses • A light bulb in the base shines light up through the specimen mounted on a glass slide. The objective lens then collects the light, which then travels to the eye.

  9. Microscopes • Electron Microscope – forms an image of a specimen using a beam of electrons rather than light. • Can magnify up to 200,000x • Living things can’t be seen under an Electron microscope because the specimens have to be looked at while in a vacuum.

  10. Electron Microscope

  11. Microscopes • Magnification – is the quality of making an image appear larger than its actual size. • Resolution – Is a measure of the clarity of an image.

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