Manipulation of Light In the Nanoworld, Glowing Street Signs IDM13
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The document outlines activities from a science fair project on light manipulation at the nanoscale. It describes 4 activities: 1) Observing light spectra using a homemade spectroscope. 2) Demonstrating diffraction of water waves passing obstacles and openings. 3) Simulating and observing interference of light waves, including constructive and destructive interference. 4) Examining iridescence in peacock feathers and soap bubbles caused by structural coloration. It proposes glowing street signs as a product idea to better illuminate signs at night for safety and proposes further inventions and improvements for future projects.
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Manipulation of Light In the Nanoworld, Glowing Street Signs IDM13
- 1. AL-BAIRAQ I AM DISCOVERING MATERIALS MANIPULATION OF LIGHT IN THE NANOWORLD Researchers Almaha rashid alnaimimrym mohammad alqasami Sara Nasser alabdullahreem turki alsubaey
- 2. OUTLINE Introduction to Light Activity 1: Lights and their Spectra Activity 2: Observing Diffraction Part 1 : diffraction in water waves Activity 3: Observing Interference Part 1 : two part simulation Part 2 : making interference Activity 4: Observing Iridescence Part 1 : peacock feather Part 2 : bubble soup Product Idea: Glowing Street Signs
- 3. INTRODUCTION TO LIGHT • Light is an energy with a large radiation or so-called electromagnetic radiation, and the length of the optical wave between 400 nm and 700 nm.
- 4. ACTIVITY 1: LIGHTS AND THEIR SPECTRA • Objective : observe the light spectra • Procedure :the scissors , paper , CD , stiplar , the circular
- 5. ACTIVITY 1: LIGHTS AND THEIR SPECTRA The spectroscope showed us a beautiful spectrum that was worth its preparations and we built the spectroscope ourselves by using simple object like a CD-R and a black paper and a cone shaped object
- 6. ACTIVITY 2: OBSERVING DIFFRACTION In this activity we wanted to generate water waves and observe them passing around a barrier and through an opening and see an example of diffractions • Conclusion : We saw a very good example of diffraction and we learned that diffraction happens when any object blocks the way of a wave.
- 7. ACTIVITY 2: OBSERVING DIFFRACTION stimulating it by computer • We concluded that interference happens when two waves collide with each other
- 8. ACTIVITY 3: OBSERVING INTERFERENCE Making Interference Transparent. Result : We found that white color constrictive interference, black color is destructive, when two waves interfere with each other
- 9. ACTIVITY 3: OBSERVING INTERFERENCE Wave generator(Mechanical wave) . Antinode : a point at which the amplitude of one of the two kinds of displacement in a standing wave. node: is a centering point of component parts.
- 10. ACTIVITY 4: OBSERVING IRIDESCENCE •We wanted to observe how iridescence happens so we tried the observing peacock feathers which are know for their iridescence property • Conclusion : We learned that
- 11. ACTIVITY 4: OBSERVING IRIDESCENCE •iridescence is the property of certain surfaces that appear to change color as the angle of view or the angle of illumination changes
- 12. • Our invention is a light behind the signs and this light will help to see more clearly at night and that this light will give light to people and so will facilitate their work faster and easier • Ourinterest in the project is to explore something new that benefits the community • What attracted me to the project is to pay attention to people who have the ability to explore new things that have a great benefit to society • The benefit of our project which was explored is to put lights behind the banners that we see in the street so that attention to them more and more at night • The goal of the project is to work a project that will increase people attention and focus more and try to explore more project Product Idea Title: Glowing Street Signs
- 13. GLOWING STREET SIGNS RECOMMENDATIONS • Of the proposals to be used in the streets or on occasion such as concerts and others • We may have other inventions and other products • We encountered simple problems because of the wheel and the time was not very sufficient because we had started work on the project late
- 14. ACKNOWLEDGMENT Thank all people, teachers, friends, and your school that supported you during your journey in Al-bairaq project. Also don’t forget to thank Al-Bairaq team and the sponsors who gave you the opportunity to participate in Al-Bairaq project, create and innovate.