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Articles 1 - 17 of 17

Full-Text Articles in Physics

Mesosphereic Temperature Variability And Seasonal Characteristics Over The Andes, Jonathan R. Pugmire, Yucheng Zhao, Michael J. Taylor, Dominique Pautet May 2011

Mesosphereic Temperature Variability And Seasonal Characteristics Over The Andes, Jonathan R. Pugmire, Yucheng Zhao, Michael J. Taylor, Dominique Pautet

Jonathan Pugmire

The Utah State University CEDAR Mesospheric Temperature Mapper (MTM) is a high-quality CCD imager capable of remote sensing faint optical emissions from the night sky to determine mesospheric temperature and its variability at an altitude of ~87 km. The MTM was operated at the new Andes Lidar Observatory (ALO)located at Cerro Pachon, Chile (30.2° S, 70.7° W) since August 2009 to investigate the seasonal characteristic of the mesopause at mid-latitudes. Measurement were made alongside a powerful lidar capable of height sounding the mesosphere. In this study, the MTM data have been analyzed to determine night to night ...


K-X-Ray Emission In Fast O5+ On Ar Collisions, Tamer Elkafrawy Apr 2011

K-X-Ray Emission In Fast O5+ On Ar Collisions, Tamer Elkafrawy

Research and Creative Activities Poster Day

The goal of the present work is to observe x-rays from oxygen for the purpose of investigating resonant-transfer and excitation (RTE) [1], and projectile and target x-ray emission resulting from inner-shell capture. Projectile energies in the range 5-25 MeV will be examined to investigate RTE for heavy targets [2,3].


Surface Geometry And Heat Flux Effect On Thin Wire Nucleate Pool Boiling Of Subcooled Water In Microgravity, Troy Munro, Andrew Fassman Mar 2011

Surface Geometry And Heat Flux Effect On Thin Wire Nucleate Pool Boiling Of Subcooled Water In Microgravity, Troy Munro, Andrew Fassman

Presentations

The motivation of this nucleate boiling research is to understand the effects of surface geometry and heat flux as applied to a thin wire heater. This will further the understanding of the fundamental behaviors of boiling onset, steady state heat transfer, and bubble dynamics with respect to nucleate boiling with the goal of creating efficient thermal management systems for future space applications. Using three different thin platinum wire geometries and five different power levels, subcooled water was boiled over a period of approximately 30 seconds for 15 parabolic arcs to simulate microgravity. To represent the trends in bubbles behavior across ...


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.


Measuring G With Movie Tracker, Stephen Schneider Jan 2011

Measuring G With Movie Tracker, Stephen Schneider

STEM Digital

No abstract provided.