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Articles 1 - 26 of 26
Full-Text Articles in Physics
Solar Cells, D. Venkataraman
Solar Cells, D. Venkataraman
Science and Engineering Saturday Seminars
Solar cells convert the sun's energy into electrical energy. In this workshop, I will discuss the processes involved in solar cell and various types of solar cells that are being developed as an alternative to silicon solar cells. I will also demonstrate how students can build a solar cell from readily available materials.
Nanotechnology Overview Powerpoint, Mark Tuominen
Nanotechnology Overview Powerpoint, Mark Tuominen
Nanotechnology Teacher Summer Institutes
Nanotechnology is the understanding and control of matter at dimensions of roughly 1 to 100 nanometers, where unique phenomena enable novel applications. This PowerPoint gives an overview of the field and introduces the teacher summer institute.
Gelatin Diffusion Experiment, Jennifer Welborn
Gelatin Diffusion Experiment, Jennifer Welborn
Nanotechnology Teacher Summer Institutes
In this activity, nanotech participants will:
- See how food dyes and gelatin are used to model the delivery of nanoscale medicines to cells in the human body - Measure diffusion distances of 3 different colors of food dye by: Eye, photo image on a computer, ADI software (Analyzing Digital Images) Some useful websites:
- http://www.echalk.co.uk/Science/biologyContent.htm Life Processes and Cells
- http://workbench.concord.org/database/activities/321.html Molecular Workbench Database. Diffusion, osmosis, ...
The Science Of Two Dimensional Materials (Powerpoint), Jun Yan
The Science Of Two Dimensional Materials (Powerpoint), Jun Yan
Nanotechnology Teacher Summer Institutes
Graphene is a single atomic sheet of graphite.
Exercise: how much graphene do we need to cover the surface of the empire state building?
Nanoscale Thin Films, Rob Snyder
Nanoscale Thin Films, Rob Snyder
Nanotechnology Teacher Summer Institutes
An activity that makes a nanoscale film of oleic acid on water. The student will
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Learn about Ben Franklin’s observations of a thin film that had a nanoscale dimension.
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Create a very thin film with a very dilute solution of oleic acid.
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Use data you collect to determine if you made a thin film with a nanoscale dimension that formed on the surface of water.
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Learn about the molecular interactions that resulted in the formation of the thin film.
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Be introduced to the Big Ideas of Nanoscale Self-Assembly
Ozone, Uv, And Nanoparticles, Morton Sternheim, Jennifer Welborn
Ozone, Uv, And Nanoparticles, Morton Sternheim, Jennifer Welborn
Nanotechnology Teacher Summer Institutes
•Ultraviolet light causes skin damage and cancer •Ozone in the stratosphere blocks UV •Sunscreen blocks UV, partly •Nanoparticles in sunscreen improve blocking Sunscreen PowerPoint and activities based on NanoSense web site:
http://nanosense.sri.com/activities/clearsunscreen/index.html
Powers Of Ten: From Meters To Nanometers And Beyond, Rob Snyder
Powers Of Ten: From Meters To Nanometers And Beyond, Rob Snyder
Nanotechnology Teacher Summer Institutes
The goal of this activity is to guide students toward an understanding of nanoscale dimensions by:
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Making a number of measurements using meter sticks, magnifiers, microscopes and spectrometers so students can make observations and generate their own data.
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Using scientific notation to compare the measurements they have made with the dimensions of very small structures
Self Assembly, Mark Tuominem, Jennifer Welborn, Rob Snyder
Self Assembly, Mark Tuominem, Jennifer Welborn, Rob Snyder
Nanotechnology Teacher Summer Institutes
No abstract provided.
Nanomedicine, Mark Tuominen
Nanomedicine, Mark Tuominen
Nanotechnology Teacher Summer Institutes
An overview of nanomedicine. The end goal of nanomedicine is improved diagnostics, treatment and prevention of disease. Nanotechnology holds key to a number of recent and future breakthroughs in medicine.
Making Solar Cells, D. Venkataraman
Making Solar Cells, D. Venkataraman
Nanotechnology Teacher Summer Institutes
Overview of solar energy and photovoltaic cells. Making a cuprous oxide cell activity.
Institute Overview, Morton Sternheim
Institute Overview, Morton Sternheim
STEM Digital
Digital cameras and computers are widely available for students and teachers. However, they are mainly used for documentation: creating PPT presentations, handouts, posters, etc. STEM DIGITAL shows how digital image analysis can be applied to environmental (and other) research in STEM courses. Application to studies of air quality, water quality, arsenic contamination, climate change, diffusion, etc.
Digital Camera Basics, Stephen Schneider
Measuring G With Movie Tracker, Stephen Schneider
Detecting And Mixing Colors, Rob Snyder
Detecting And Mixing Colors, Rob Snyder
STEM Digital
How can Analyzing Digital Images software reveal the differences between primary colors of light and primary colors of paints or pigments?
Leaf Leaching Experiment, David Reckhow
Leaf Leaching Experiment, David Reckhow
STEM Digital
Water treatment engineers and public health officials need to pay careful attention to the presence of dissolved organic matter in water supplies selected for human consumption (i.e., raw drinking waters).
Measuring Albedo With Adi - An Intensity Application, Morton Sternheim
Measuring Albedo With Adi - An Intensity Application, Morton Sternheim
STEM Digital
Why are Polar Regions more affected by global warming than other parts of the globe? One reason (there are others) is that as sea ice melts and more open water appears, more energy is absorbed, and warming accelerates. This is a form of positive feedback and it makes the polar climate change faster than the climate in temperate areas. Increasing vegetation on land also has a similar positive feedback effect. This effect is a change in the albedo – the fraction of the incident sunlight that is reflected back to space.
Stem Digital And Adi In The Classroom, Jennifer Welborn
Stem Digital And Adi In The Classroom, Jennifer Welborn
STEM Digital
Applications of ADI by students at Amherst Regional Middle School
Co2 Diffusion Through Gelatin Experiment, Jennifer Welborn
Co2 Diffusion Through Gelatin Experiment, Jennifer Welborn
STEM Digital
An example of measuring lengths.
Natural Organic Matter In Water, David Reckhow
Natural Organic Matter In Water, David Reckhow
STEM Digital
Formation in Watersheds and Removal in Water Treatment
Using Adi To Quantify A Color Change In Crayfish, Jennifer Welborn
Using Adi To Quantify A Color Change In Crayfish, Jennifer Welborn
STEM Digital
Do Crayfish Change Color If Their Environment Changes? A Guided Inquiry Lab for 7th grade Life Science
Background: There is anecdotal evidence from bass fisherman that crayfish are able to change color depending on their surroundings. A (cursory) literature review of this phenomenon showed that no formal research has been done in this area. Students had an additional informal lesson about research funding (or lack thereof) because of this finding.
Students designed and conducted a controlled experiment to see the effect of changing environment color on crayfish color.
ADI was used to quantify a color change.
Human Variation In Skin Color And Race As A Social Construct, Jennifer Welborn
Human Variation In Skin Color And Race As A Social Construct, Jennifer Welborn
STEM Digital
This lesson is part of evolution unit which follows heredity and genetics
The lesson is interdisciplinary in nature in that I discuss the concept of race as a social construct and the idea that there are “black, white, red, yellow” skinned people is something that people developed. It is not based on biology. Race groupings are human-made groups.
Students first learn about mixing light and how to determine black and white from an ADI analysis. They learn that red and green = yellow, etc.
They then photograph each other’s forearms and analyze the images using ADI.
We then discuss skin …
Air Quality: Carbon Dioxide, Deborah Carlisle, Stephen Schneider
Air Quality: Carbon Dioxide, Deborah Carlisle, Stephen Schneider
STEM Digital
Measuring CO2 with BTB and ADI.
Measuring Angles With Adi, Stephen Schneider
Arsenic Project Topics, Julian Tyson
Arsenic Project Topics, Julian Tyson
STEM Digital
How do analytical chemists make light work in tracking potentially harmful chemicals?
Nanofilters For Clean Water, Morton Sternheim
Nanofilters For Clean Water, Morton Sternheim
Nanotechnology Teacher Summer Institutes
•The problem: adequate clean water •Kinds of filters •Desalination of salt water •Cleaning polluted water •Hands on nanofiltration experiment Adapted from the Nanosense project: http://nanosense.sri.com/activities/finefilters/index.html
More On Powers Of Ten, Morton Sternheim
More On Powers Of Ten, Morton Sternheim
Nanotechnology Teacher Summer Institutes
A powers of ten personation and activity adapted from the Nanosense project:
http://nanosense.sri.com/activities/sizematters/index.html