1. Purpose and scientific goals
The purpose of doing this lab is to observe and examine the different changes we see every day in the sky. Italian astronomer Galileo Galilei created a perfect method that could be useful for measuring time. The object or tool used in this lab is called a pendulum. It’s a useful tool that was successfully created by Galileo himself for timekeeping. The pendulum was used for timekeeping until clocks were invented. Today, it’s still being used in schools and college institutions to measure time.
2. Experimental Procedure, Results, and Discussions
In this lab experiment, we use a real pendulum just like the one Galileo invented for timekeeping. We must tie up a string on one end to the bob. We needed
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Our first trial, it took us nearly 19 seconds to complete 20 swings. 2nd trial took 19 seconds again. Finally, our last trial took about 18 seconds. After those three trials, we must average it out. 19+19+18= 56/3= 18.66666667. Close estimate would be 19 or 20 seconds. The period is
2.8 seconds.
Next, we had to measure the length of the string in cm. The length must be measured from the middle of the bob to the string that supports itself. The length of the string was about 20.5 centimeters long. Lastly, we had to find the predicted period and to do that we must use the chart. The chart is a line graph showing how long is the length per period in seconds. As we looked closely at the graph, the predicted period (sec) is 1.2.
3. Results of Measurements and Conclusion
In conclusion, this lab was just an exercise of how timekeeping was used during the 16th to
19th centuries. Astronomers like Galileo used their own techniques to instruct a way we can do timekeeping. During the lab session, we had small errors like calculations and
For both experiments, data were collected for thirty seconds.
to get an idea of how I would do my real experiment and what apparatus
In the prediction I can ignore the amount of time it takes to hit the
The laboratory experiment gives the experimenter a greater chance to control the conditions and enables you to measure behaviour with greater precision. This method also allows for quantative research and also enables greater control of variables. Although it gives the experimenter greater control, this can also seem daunting to the subject who may feel more uncomfortable and is less likely to ...
The SEM of the pulse rate before the test is +/-4.2bpm, while the SEM after the test is +/-10.1bpm. The mean recovery time (which is measured in minutes) is also compared. The slow steppers had an average recovery time of 2.3 +/-0.42, whereas the fast steppers had an average recovery time of 3.75 +/-0.44. The difference in the recovery rate between the two groups is
Time = (location of last peak – location of the first peak) / frame rate;
exact, the time was only able to be told by the hourly chiming of the
Scientific method is shown through the narrator, as he is very curious about the slowing down of the clocks, and why things
In 1589, Galileo had dropped two balls of different masses from the Leaning Tower of Pisa to demonstrate that their time of descent was independent of their mass. Galileo
To test this relationship an experiment will have to be performed. where the time period for an oscillation of a spring system is related. to the mass applied at the end of the spring. Variables that could affect T Mass applied to spring; preliminary experiments should be performed to. assess suitable sizes of masses and intervals between different masses.
Results: The experiments required the starting, ending, and total times of each run number. To keep the units for time similar, seconds were used. An example of how to convert minutes to seconds is: 2 "minutes" x "60 seconds" /"1 minute" ="120" "seconds" (+ number of seconds past the minute mark)
Most students who walk into the science building and see the pendulum know that there is specific science that explains how a pendulum works but most likely do not know its details. This provokes the awareness that something that entrancing can be explained by science, and the absence of the specific explanations provokes the longing for a more scientific understanding of the world. To someone who is not in love with science, the mathematics behind the nature of a pendulum is not very awe-inspiring, which is perhaps why the pendulum in the foyer of the science building is so exquisitely made. By hanging a 55-foot pendulum appearing to have been made of gold to a majestic, wooden ceiling encompassed with natural light, Berry College made sure that it would strike a significant amount of reverence even to those who are new to science.
With the rewards the Board of Longitude officially announced, they motivated me to build a timekeeper that can be reliable. I believed that H-4 the best prize, £20,000 because it is in fact, more accurate than 30 minutes. The H-4 clock, I believe, is the best clock I have ever made. All of the years I spent making H-1, H-2, and H-3 are the hard works behind
Galileo used this great invention to report astronomical facts such as the moon is cover with craters instead of being smooth, the Milky Way is composed of millions of stars, and Jupiter have four moons. Perhaps the most famous discovery is the Earth revolves around the Sun and the Earth is not the center of the universe (even though he was discredited at the time).