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University of Massachusetts Amherst

Articles 1 - 30 of 34

Full-Text Articles in Physics

Solar Cells, D. Venkataraman Jan 2019

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.


Overview, Benjamin Davidovitch, Narayanan Menon, Jennifer Welborn, Wayne Kermenski Jan 2017

Overview, Benjamin Davidovitch, Narayanan Menon, Jennifer Welborn, Wayne Kermenski

Patterns Around Us

No abstract provided.


Superhero Robotics, Frank Sup, Brian Umberger, Nick Sawyer Jan 2017

Superhero Robotics, Frank Sup, Brian Umberger, Nick Sawyer

Science and Engineering Saturday Seminars

No abstract provided.


Size Matters, Morton Sternheim Jan 2015

Size Matters, Morton Sternheim

Nanotechnology Teacher Summer Institutes

Size matters in the way materials behave. An introductory PowerPoint and an activity write-up. Three activities illustrate how the surface to volume ratio changes as the size changes. In the first, a deck of playing cards is used to make square arrays of cards of increasing size. Next wooden cubes are used to make similar observations in 3 dimensions. Finally, comparing the rates at which an intact Alka Seltzer tablet and a crushed tablet react in water shows the effect of particle size on chemical reactions.


Nanoscale Thin Films, Rob Snyder Jan 2015

Nanoscale Thin Films, Rob Snyder

Nanotechnology Teacher Summer Institutes

An activity that makes a nanoscale film of oleic acid on water. The student will

  • Learn about Ben Franklin’s observations of a thin film that had a nanoscale dimension.

  • Create a very thin film with a very dilute solution of oleic acid.

  • Use data you collect to determine if you made a thin film with a nanoscale dimension that formed on the surface of water.

  • Learn about the molecular interactions that resulted in the formation of the thin film.

  • Be introduced to the Big Ideas of Nanoscale Self-Assembly


Powers Of Ten: From Meters To Nanometers And Beyond, Rob Snyder Jan 2015

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:

  • Making a number of measurements using meter sticks, magnifiers, microscopes and spectrometers so students can make observations and generate their own data.

  • Using scientific notation to compare the measurements they have made with the dimensions of very small structures


Gelatin Diffusion Experiment, Jennifer Welborn Jan 2015

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:


The Science Of Two Dimensional Materials (Powerpoint), Jun Yan Jan 2015

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?


Atomic Force Microscopes, Rob Snyder, Jennifer Welborn Jan 2015

Atomic Force Microscopes, Rob Snyder, Jennifer Welborn

Nanotechnology Teacher Summer Institutes

PowerPoint overview. A student activity that builds an atomic force microscope model.


Ozone, Uv, And Nanoparticles, Morton Sternheim, Jennifer Welborn Jan 2015

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


Self Assembly, Mark Tuominem, Jennifer Welborn, Rob Snyder Jan 2015

Self Assembly, Mark Tuominem, Jennifer Welborn, Rob Snyder

Nanotechnology Teacher Summer Institutes

No abstract provided.


Nanomedicine, Mark Tuominen Jan 2015

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.


Nanotechnology Overview Powerpoint, Mark Tuominen Jan 2015

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.


Magnetic Memory: Data Storage And Nanomagnets, Mark Tuominem Jan 2015

Magnetic Memory: Data Storage And Nanomagnets, Mark Tuominem

Nanotechnology Teacher Summer Institutes

An overview of magnetic data storage and a simple activity.


Producing Electricity With Solar Cells, Chris Emery, Rob Snyder Jan 2015

Producing Electricity With Solar Cells, Chris Emery, Rob Snyder

Science and Engineering Saturday Seminars

No abstract provided.


Making Solar Cells, D. Venkataraman Jan 2013

Making Solar Cells, D. Venkataraman

Nanotechnology Teacher Summer Institutes

Overview of solar energy and photovoltaic cells. Making a cuprous oxide cell activity.


Wind Power, Susn Reyes Jan 2012

Wind Power, Susn Reyes

Science and Engineering Saturday Seminars

No abstract provided.


Measuring Albedo With Adi - An Intensity Application, Morton Sternheim Jan 2011

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.


Natural Organic Matter In Water, David Reckhow Jan 2011

Natural Organic Matter In Water, David Reckhow

STEM Digital

Formation in Watersheds and Removal in Water Treatment


Leaf Leaching Experiment, David Reckhow Jan 2011

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).


Human Variation In Skin Color And Race As A Social Construct, Jennifer Welborn Jan 2011

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 ...


Measuring Angles With Adi, Stephen Schneider Jan 2011

Measuring Angles With Adi, Stephen Schneider

STEM Digital

No abstract provided.


Arsenic Project Topics, Julian Tyson Jan 2011

Arsenic Project Topics, Julian Tyson

STEM Digital

How do analytical chemists make light work in tracking potentially harmful chemicals?


Stem Digital And Adi In The Classroom, Jennifer Welborn Jan 2011

Stem Digital And Adi In The Classroom, Jennifer Welborn

STEM Digital

Applications of ADI by students at Amherst Regional Middle School


Institute Overview, Morton Sternheim Jan 2011

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.


Co2 Diffusion Through Gelatin Experiment, Jennifer Welborn Jan 2011

Co2 Diffusion Through Gelatin Experiment, Jennifer Welborn

STEM Digital

An example of measuring lengths.


Using Adi To Quantify A Color Change In Crayfish, Jennifer Welborn Jan 2011

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.


Detecting And Mixing Colors, Rob Snyder Jan 2011

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?


Air Quality: Carbon Dioxide, Deborah Carlisle, Stephen Schneider Jan 2011

Air Quality: Carbon Dioxide, Deborah Carlisle, Stephen Schneider

STEM Digital

Measuring CO2 with BTB and ADI.


Digital Camera Basics, Stephen Schneider Jan 2011

Digital Camera Basics, Stephen Schneider

STEM Digital

No abstract provided.