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Designed by Fu-Kwun Hwang http://www.phy.ntnu.edu.tw/ntnujava/  

Translations

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Credits

Author name; Fu-Kwun Hwang; Loo Kang Wee

Briefing Document: Millikan Oil Drop Experiment JavaScript Simulation Applet HTML5

1. Subject: Millikan Oil Drop Experiment JavaScript Simulation Applet HTML5

2. Source: Open Educational Resources / Open Source Physics @ Singapore website.

3. Purpose: To provide a readily accessible, interactive simulation of the Millikan Oil Drop experiment for educational purposes.

4. Main Themes and Important Ideas:

• Interactive Simulation: The core offering is a JavaScript/HTML5 applet that simulates the Millikan Oil Drop experiment. This allows users to manipulate variables and observe the effects on the oil drops, promoting active learning. This is significant as it moves away from static textbook representations and offers a dynamic, hands-on experience.
• Quote (implied): The entire page revolves around the "Millikan Oil Drop Experiment JavaScript Simulation Applet HTML5," suggesting its central role in the resource. The embed code provides direct access to the simulation: <iframe width="100%" height="100%" src="https://iwant2study.org/lookangejss/06QuantumPhysics/ejss_model_millikan/millikan_Simulation.xhtml " frameborder="0"></iframe>
• Open Educational Resource (OER): The simulation is part of a larger collection of OER from Open Source Physics @ Singapore. This indicates a commitment to providing free, accessible, and reusable educational materials. This is important for democratizing access to science education.
• Accessibility & Embeddability: The use of JavaScript/HTML5 ensures the simulation can run on various devices (desktops, tablets, potentially smartphones) without requiring special software. The embed code provided allows educators to easily integrate the simulation into their own websites or online learning platforms. This promotes wider adoption and integration into curricula.
• Quote: "Embed this model in a webpage:" followed by the iframe code.
• Attribution and Licensing: The resource explicitly credits the author (Fu-Kwun Hwang, Loo Kang Wee). The content is licensed under Creative Commons Attribution-Share Alike 4.0 Singapore License, promoting sharing and adaptation with proper attribution.
• Quote: "Contents are licensed Creative Commons Attribution-Share Alike 4.0 Singapore License."
• Part of a Larger Ecosystem of Simulations: The page links to a vast collection of other physics and math simulations, suggesting a comprehensive resource for interactive learning in STEM fields. Examples include simulations on topics like "Bohr's Theory of the Hydrogen Atom," "Projectile Motion," "AC or DC Appliances" and many others.
• Learning Goals (Sample): Although the sample learning goals are not provided in this document, the intention is stated. This suggests the simulation is designed to help students achieve specific learning objectives related to understanding the quantization of electric charge, the principles of electromagnetism, and/or the historical context of the experiment.

5. Key Facts:

• Experiment: Millikan Oil Drop Experiment.
• Format: JavaScript/HTML5 Applet Simulation.
• Authors: Fu-Kwun Hwang, Loo Kang Wee
• Platform: Open Educational Resources / Open Source Physics @ Singapore.
• Licensing: Creative Commons Attribution-Share Alike 4.0 Singapore License.
• Accessibility: Embeddable in webpages.
• Broader Context: Part of a large collection of interactive physics simulations.

6. Potential Uses:

• Classroom demonstrations of the Millikan Oil Drop experiment.
• Student exploration of the factors influencing the motion of charged oil drops.
• Interactive homework assignments or lab activities.
• Supplement to traditional textbook learning.
• Self-paced learning for students interested in quantum physics or electromagnetism.

7. Limitations:

• The provided document is primarily a landing page. It lacks specific details about the simulation's features, variables, or controls. Accessing the actual simulation is necessary to fully evaluate its educational value. There is no explanation of the underlying mathematics and assumptions made by the simulation.
• The effectiveness of the simulation will depend on how it's integrated into a broader learning context. Without proper guidance or support, students might struggle to understand the underlying concepts.
• The "For Teachers" and "Research" sections are empty, so information about pedagogical strategies and empirical evidence of the applet's effectiveness are missing.

Millikan Oil Drop Experiment: A Study Guide

I. Overview

This study guide reviews the Millikan oil drop experiment, focusing on the experiment's purpose, procedure, and significance in determining the elementary electric charge. This resource is based on the provided text, which offers a JavaScript simulation of the experiment.

II. Study Questions

A. Short Answer Quiz

Answer each question in 2-3 sentences.

1. What was the primary goal of the Millikan oil drop experiment?
2. Briefly explain the role of gravity in the Millikan oil drop experiment.
3. What is the significance of using oil droplets in the experiment, as opposed to other substances?
4. How does the electric field influence the movement of the oil droplets?
5. What are some potential sources of error that could affect the accuracy of the experiment?
6. Explain how the Millikan experiment demonstrated the quantization of electric charge.
7. What kind of mathematical models were important to Millikan's findings?
8. How can interactive simulations, like the one mentioned in the resource, enhance the understanding of the Millikan oil drop experiment?
9. Why is it important that this resource is open source?
10. Briefly describe the value of using the simulation as part of the teaching and learning process?

B. Short Answer Quiz - Answer Key

1. The Millikan oil drop experiment aimed to determine the elementary electric charge, which is the smallest unit of electric charge that exists independently. By carefully observing the motion of charged oil droplets, Millikan calculated this fundamental constant.
2. Gravity acts as a downward force on the oil droplets, causing them to fall at a constant velocity in the absence of other forces. This gravitational force was counteracted by an upward electric force, allowing Millikan to balance the forces and make accurate measurements.
3. Oil droplets are used because they are small enough to be easily suspended and observed under a microscope, and they can be readily charged through ionization. Their stability and slow evaporation rate also made them ideal for precise measurements.
4. The electric field exerts a force on the charged oil droplets, influencing their movement. By adjusting the strength and direction of the electric field, the upward electric force on the droplets can be balanced against the downward gravitational force.
5. Potential sources of error include inaccurate measurements of the droplet's velocity, variations in the air's viscosity, and imperfections in the electric field. These factors could affect the accuracy of the calculated charge on the droplets.
6. The Millikan experiment demonstrated that the charge on each oil droplet was always a multiple of a fundamental unit, the elementary charge. This showed that electric charge is not continuous but exists in discrete, quantized units.
7. Stokes' Law and Newton's Second Law were both important mathematical models for accurately describing the motion of the droplets. Millikan used these laws of physics to derive equations to measure the charges on individual oil droplets.
8. Interactive simulations allow students to visualize the experiment, manipulate variables, and observe the resulting effects on the oil droplets. This hands-on approach can deepen understanding and make the experiment more accessible.
9. Being open source allows educators and students to freely use, modify, and distribute the simulation, promoting collaborative learning and customization to specific educational needs. It also ensures wider accessibility and adaptation to different learning environments.
10. The simulation provides a safe and controlled environment to conduct the experiment virtually, allowing for repeated trials and exploration of different parameters. It also simplifies complex concepts and makes learning more engaging and interactive for students.

C. Essay Questions

Consider these questions for deeper analysis and essay writing.

1. Discuss the significance of the Millikan oil drop experiment in the development of modern physics.
2. Explain how the Millikan oil drop experiment provided evidence for the quantization of electric charge, comparing it to earlier models of charge.
3. Analyze the strengths and limitations of using simulations in teaching the Millikan oil drop experiment compared to traditional laboratory setups.
4. Evaluate the impact of open educational resources like the Millikan oil drop simulation on accessibility and equity in science education.
5. Describe how this interactive simulation could be used to increase interest in STEM fields among secondary students.

III. Glossary of Key Terms

• Elementary Electric Charge: The smallest unit of electric charge that exists independently, approximately 1.602 x 10^-19 coulombs.
• Quantization: The concept that certain physical quantities, such as electric charge, can only exist in discrete, specific values rather than continuous amounts.
• Electric Field: A region around an electrically charged object where a force is exerted on other electrically charged objects.
• Ionization: The process by which an atom or molecule gains or loses electrons, becoming an ion with a net electric charge.
• Stokes' Law: A formula describing the drag force on a spherical object moving through a viscous fluid.
• Viscosity: A measure of a fluid's resistance to flow.
• Open Educational Resources (OER): Teaching, learning, and research materials that are freely available to anyone.
• JavaScript Simulation: An interactive computer program that models a real-world process or experiment using the JavaScript programming language.
• Applet: A small application, often written in Java or JavaScript, that runs within another application, such as a web browser.
• HTML5: The latest evolution of the standard that defines HTML. It is used for structuring and presenting content on the World Wide Web.

Sample Learning Goals

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For Teachers

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Research

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Video

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 Version:

http://weelookang.blogspot.com/2018/02/millikan-oil-drop-experiment-javascript.html

Other Resources

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Frequently Asked Questions

• What is the Millikan Oil Drop Experiment simulation applet?
• It is a JavaScript HTML5 simulation designed to model the Millikan Oil Drop Experiment, a significant experiment in physics used to determine the elementary electric charge (the charge of a single electron). The simulation allows users to explore the principles behind the experiment in an interactive way.
• Who designed this simulation?
• The simulation was designed by Fu-Kwun Hwang from http://www.phy.ntnu.edu.tw/ntnujava/.
• Where can I find the simulation to use it?

The simulation can be found on the Open Educational Resources / Open Source Physics @ Singapore website and embedded in web pages using the provided iframe code: <iframe width="100%" height="100%" src="https://iwant2study.org/lookangejss/06QuantumPhysics/ejss_model_millikan/millikan_Simulation.xhtml " frameborder="0"></iframe>

• What are some related physics topics to the Millikan Oil Drop Experiment?
• The simulation is related to electromagnetism and quantum physics, specifically focusing on the quantization of electric charge.
• Are there other simulations available on the Open Educational Resources / Open Source Physics @ Singapore platform?
• Yes, the platform offers a wide range of physics and mathematics simulations and interactive resources, covering topics from mechanics and electromagnetism to optics and modern physics.
• Is the simulation available in multiple languages?
• The site mentions "Translations" as a feature, suggesting that some simulations may be available in multiple languages, though this is not explicitly stated for the Millikan Oil Drop simulation itself.
• Who are Loo Kang Wee and Fu-Kwun Hwang?
• Loo Kang Wee and Fu-Kwun Hwang are both credited in the design and creation of the simulation. They are likely key contributors to the Open Educational Resources / Open Source Physics @ Singapore project.
• What is the license for using the simulation?

The contents are licensed under the Creative Commons Attribution-Share Alike 4.0 Singapore License. For commercial use of the EasyJavaScriptSimulations Library, consult https://www.um.es/fem/EjsWiki/Main/EJSLicense and contact fem@um.es directly.