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Scientific Method

Scientific Method. Let’s view the video. When was this photo taken ? (season/month and year) Record observations to back up your inference . . Late1800s Laboratory. Primitive electricity No Computer No instruments Could see some batteries Could see telephone No women.

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Scientific Method

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  1. Scientific Method Let’s view the video

  2. When was this photo taken? (season/month and year)Record observations to back up your inference.

  3. Late1800s Laboratory • Primitive electricity • No Computer • No instruments • Could see some batteries • Could see telephone • No women

  4. 1900- 1945 (Prior to WW 2) • Electricity (outlets and lights) • Few women • Some small appliances (blender) • No computers

  5. Laboratory 1945-1965 • Fluorescent lighting • Glassware and instruments are more compact • Still prefer wooden furniture but some metal and plastic is used

  6. Laboratory space 1965-1985 • Most modern equipment is present • Computers are still not present or are too big for the lab • Instruments are still not as visible • Not as much ventilation but some safety equipment

  7. 1985-1995 • Computers present • Instruments present • Digital balances • Ventilation and safety devices in plenty • Much area for electronics to plug in

  8. Modern Day • Flat panel monitors • Many instruments • Much safety equipment and ventilation

  9. Newer Freshmen Chemistry Lab

  10. Newer upper-level Chemistry Lab

  11. What should I look for in a college chemistry lab? • TOYS! • Instruments of all kinds Gas Chromatograph, Liquid Chromatograph, Spectrometers, Mass Spectrometers (very nice), NMR, and biotechnology equipment such as electrophoresis chambers • Minimum digital balances, analytical balances, a few computers running up to date software, and some spectrometer like UV-vis or UV-IR.

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