Procedures in the Physical Science Essay

1440 Words Apr 22nd, 2013 6 Pages
Laboratory Research Report 1: Procedures in the Physical Sciences

Hebert Duran
Strayer University
SCI 110, Kung Craig P.
29 April 2013

Identify three (3) specific challenges to making direct measurements in the fields of astronomy, chemistry, physics, or earth science. Describe how scientists have utilized indirect forms of measure to overcome these challenges

Since the ancient times people have always been attracted to the unknown. Humans have always been curious about everything they have come across; How big is our earth?, how deep is the sea? Are there any other lands past the horizon?, and how big is our universe?. These types of questions have always led humans to forcefully exercise their minds into figuring them out.
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The telescope is an optical instrument designed to make distant objects appear nearer. It contains an arrangement of lenses or mirrors or both that gathers visible light, permitting direct observation or photographic recording of distant objects. (Lacki, B. C. 2011). With the use of telescopes we have been able to learn a lot more about the planets in our universe. It has helped us understand about some of the history of everything around us. Also it has been able to track asteroids and comets or any randomly flying objet in outer space that might become threatening to our planet. Another tool that have had a big impact in the science world is the Microscope. A microscope is an optical instrument that uses a lens or combination of lenses to produce a magnified image of small or microscopic objects such as bacteria and cells. One of the most known and historic purposes that the microscope has been used for is during the discovery of penicillin. Dr. Fleming, a bacteriologist, observed that a plate culture of staphylococcus had bee contaminated by a blue green mold. Then tracking and observing the bacteria through a microscope Dr. Fleming was able to observe that the colonies of bacteria next to the mold were being dissolved. Fleming then proceed to grow the mold in pure culture and produced a substance that killed a number of