Accurately Predicting The Focal Length For Four Lens Systems

1786 words - 7 pages

Abstract: We attempted to accurately predict the focal length for four lens systems: a 100 mm lens, a 200 mm lens, a compound lens system, and an unknown lens. This was done by using an optics track with a mounted light and displayed image, and measurement of the location of image in full focus after movement of a white display plate set up after the lens system. The best value of f100 was determined to be from unweighted computations, with a value of f100=(0.096±0.0004) m, with a percent error of 3.6%, a fractional error of 0.4%, and a discrepancy of 9.1σ. The best value of f200 was determined to be from weighted calculations, giving a value of f200 =(0.206±0.001) m, with a percent error of 3.0%, a fractional error of 0.65%, and a discrepancy of 4.5σ. The compound lens system yielded a final image distance of 0.093 m for 0.1 m separation and a final image distance of 0.048 m for 0.2 m separation. The percent errors were 0.3% and 8.0% respectively. The unknown lens had a measured focal length of 0.14 m, a 7.7% percent error from the known value of 0.13 m. Systematic error within each of the experimental procedures could of arisen from subjectivity of the displayed image’s focus or lens damage in the form of scratches. However, the preciseness of the experimental measurements indicates that perhaps the manufacturer or the lenses misreported the focal length of the lens, indicating that the experimental values of the focal lengths are more reliable than the known values.

Procedures Used: Procedures were followed in accordance with those outlined in the PHYS-210 laboratory hand out, for experiment V: thin lenses. No significant derivations were made from the laboratory handout. However, for the determine of the focal point of the unknown lens, an experimental procedure independent of the laboratory manual was used. Here, the light source on the optics track was lowered and placed at the 0 m mark, and an image of 5 lines was used as the displayed image. The unknown converging lens was placed between the light source and a white display plate also mounted on the track. The display plate was moved until the the image of the 5 lines became a single line. This was determined to the image distance, and the focal length of the lens was calculated from this point.

Data Section: See attached spreadsheet for appropriate figures and graphs, summarizing the data found for the each part of the experiment. Microsoft Excel was utilized to calculate mean and standard deviation for each set of values. For equations utilized for these calculations, please refer to the PHYS-210 laboratory handout.

Data Analysis: Using an optics track with a projected image and lenses, 5 trials were carried out for two converging lenses, a compound lens system, and an unknown lens. Using the measured distance at which the image projected was in focus, and the distance the lens was from the light source, the values for the focal length of the lens or lens system were...

Find Another Essay On Accurately Predicting the Focal Length For Four Lens Systems

for this essay I investigated Ohms Law. I investigated the effect that the length and the thickness of wire had on the resistance

1721 words - 7 pages 6 Move crocodile clip A 5cm along wireStep 7 Repeat steps 2-6 until you have readings from 0cm - 100cmResults Tables and Graphs Shown on next pages.Ohms Law states: "The current flowing through a metal wire is proportional to the potential difference across it (providing the temperature remains constant).Results TablesI only calculated the Resistance for the average values as four lines of best fit on one graph, when the lines would follow

The Four R's and Organizational Framework for School Turnaround

2278 words - 9 pages The Four R’s and Organizational Framework for School Turnaround The No Child Left Behind Act of 2001 defines Chronically Low Performing Schools (CLPS) as those with a high proportion of students, 20% or more, failing to meet levels of proficiency in reading or mathematics for more than two consecutive years. The question becomes why? Why are students not proficient in reading and math as defined by the No Child Left

This paper discusses the four functions for management

879 words - 4 pages . All team leaders are to report on participant's results every Friday and note any corrective action that they are will be initiating Monday to have better results by the next call. They are also responsible for their team to have results as a whole or Jane will to take corrective action with them. Every four weeks the teams will get together to celebrate their successes in the last month. This is carried out and guess was successful.

Pros and Cons for Each of The Four Parenting Styles

2231 words - 9 pages To be a parent is hard work. Although every parent has a different mindset towards raising a child, the types of parenting styles can be distinguished amongst a few different kinds. In this research paper, one will learn the pros and cons for each of the four parenting styles described by Baumrind and the effect each one has on a child. Baumrind based her studies towards the development of adolescents and how the specific parenting style has

“The Current Status of E911 Implementation for VoIP Systems”

2747 words - 11 pages "The Current Status of E911Implementation for VoIP Systems"One of the very first things that parents and educators teach children to do after learning how to use the phone, is how to dial 911 for emergency assistance. Children that are barely able to babble to their grandparents over the phone are sufficient and capable of dialing 911 in the event that their parents are unable to do the same. The purpose of having a dedicated phone number linked

The Buddha's Four Noble Truths - A Logical Basis for a Philosophy

1639 words - 7 pages The Buddha's Four Noble Truths:A Logical Basis for PhilosophyThe Buddha Shakyamuni was born in the 6th century BCE in the area presently known as Nepal. During his 80 year lifetime, he systematically developed a pragmatic, empirically based philosophy which he claimed would lead its followers towards an enlightened existence. Buddhism is commonly called a religion; however, it differs from the usual definition of a religion in that it has no

Childhood Amnesia and the Beginnings of Memory for Four Early Life Events

1225 words - 5 pages When we ask people to recall experiences, they rarely report memories dating from much before about three years of age. For the purpose of this assessment I have chosen the ‘Childhood Amnesia and the Beginnings of Memory for Four Early Life Events’ conducted by JoNell A. Usher and Ulric Neisser, published in 1993 in the Journal of Experimental Psychology: General. Therefore, in the following paragraphs I will outline the aim of the study, the

Television and Media Essay - Four Arguments for the Elimination of TV

2890 words - 12 pages Four Arguments for the Elimination of Television   Television technology has been a controversial issue since its debut in the early 1940s. In order to fully understand any controversial issue, one must be presented with both the pro and the con sides of the issue. One must understand and be able to argue both sides of the issue in order to become a successful and well-educated person. Being a member of the pro-technological

Why Female Colleges are the Best Four Years Investment for Girls?

1201 words - 5 pages skills to become the president of one of the most prestigious coed-universities in the United States, Harvard University. In Conclusion, female colleges do offer a stronger educational package in relation to the development of their students as leaders and great thinkers without the male influence. The major qualifications that makes women colleges a great four year investment for girls is that it reduces students from not focusing at their studies

"A Study On Agriculture Systems" A study of four typical agricultural systems, with example. focused on the efficiency and feasibilities. Report format with sub-sections, not really an essay

1685 words - 7 pages farming system greatly limits availability of technology such as machineries. Results in general ineffectiveness of such system. Like most subsistence farming systems, intensive subsistence farming are usually found in relatively less developed areas with inexpensive labour, where the land may be fertile but unsuitable for extensive agricultural activities due to adverse environmental factors like a mountainous terrain or economic factors such as

The Victorian Period: A Time for Drastic Change. Does Wuthering Heights Accurately Represent the Victorian Period?

1310 words - 5 pages women's rights movement in Britain. During this time, women were protesting their social status and fighting for their rights to be treated as equals among men and gaining the privilege to vote. People were finally taking the weight of their social responsibility, unlike the period before them, the Romantics ("Victorian Web").Among this period we start to see many social changes, turning events in the favor of women. Many important laws were passed

Similar Essays

Democracy: The Four Theories (Systems) Of Press

1626 words - 7 pages press can pay thanks for the progressions that have occurred over time that have allowed for such liberties. There are four theories (systems) of press according to Fred Seaton Siebert that have either brought forth today's democratic press to countries, or are what continue to hinder those not living in such a democracy. The two main systems as noted by Siebert et al are Authoritarian, and Libertarian, and the latter two “theories” are merely

Choosing Electoral Systems Through The Lens Of The Main Yardsticks: Representation And Stability (Sustainability)

1056 words - 5 pages Electoral systems are one of the primary and fundamental institutions of political systems. Many of the existing types of electoral systems can seriously render an influence on every field of state policy beginning with wealth care and finishing with defence systems. In this case, choosing between the types of electoral systems is substantial through the lens of two key yardsticks: representation of all peoples’ demands as well as stability and

To Investigate How The Length Of A Simple Pendulum Affects The Time For A Complete Swing

1919 words - 8 pages AimTo investigate how the length of a simple pendulum affects the time for a complete swingTheoryWhen the pendulum is at the top of its swing it is momentarily stationary. It has zero kinetic energy and maximum gravitational potential energy. As the pendulum falls the potential energy is transferred to kinetic energy. The speed increases as the pendulum falls and reaches a maximum at the bottom of the swing. Here the speed and kinetic energy are

Teaching Skills. Evaluating The Students 1567 Words In Length. Submited For My Final Teaching Assignment

1518 words - 6 pages your course.Definition: Evaluation and Assessment go hand in hand. Assessment is finding out how students are learning and progressing (for the tutor's benefit)Evaluation is finding out to what extent the tutor is succeeding in producing an effective learning environment (or my employer the xxx college The xxx college evaluate because they want to:·Assess value for money.·Help them to improve training systems, provide procedures or