Astronomy: The Discovery that the Universe is Speeding Up
A 3:47 video that shows how astronomers discovered that the universe is speeding up and why this may be important. A good video to show students the importance of astronomy as a subject and some of the mysteries that are yet to be solved such as dark energy.
C21: Physics Teaching for the 21st Century
Physics Teaching for the 21st Century is a resource for teachers who are interested in teaching physics concepts in real world contexts. The great problems of the 20th century were solved by a few incredibly smart people. The great problems of the 21st century will have to be solved by billions of moderately smart people. This is where teachers come in... In this website you will find: * articles that clearly explain the physics concepts in a real world context * take-home experiments that ca
World TB Day Tuberculosis in the 21st Century: Payam Nahid
Payam Nahid, M.D., Associate Professor at the University of California San Francisco, counteracts the stigma of TB as an ancient disease and addresses the reason why the disease is prevalent in the present.
Portugal buys time with bond sale
Debt-laden Portugal raised 1.65 billion euros in a surprisingly strong bond sale but analysts predict its high cost of borrowing will still force it into an international bailout within months.
This site is a wonderful resource for undergraduate researchers and their mentors. Topics covered include research nuts and bolts, funding your science, scientific ethics, lab safety, communicating your science and mentoring issues. The site makes good use of case studies, self-study questions and references on each topic.
All about Electrochemistry
Site contains introductory material in basic electrochemistry. Topics include galvanic cells, electrodes, cell potentials and thermodynamics, Nernst, batteries and fuel cells.
Introduction to Scanning Probe Microscopy
This learning module teaches the principles behind scanning tunneling microscopy and atomic force microscopy. The module includes example applications and ample literature citations.
GC Splitless Injection Animation
This site is one in a series of sites with very good animations related to separations. This animation deals specifically with splitless injection in GC. The animations are short (one to two minutes) and can easily be shown in class as part of a lecture. They are extremely helpful in illustrating key components and concepts of chromatographic systems. Users are encouraged to explore the site and the other brief animations as well. Separate links to other simulations by the same company (TRSL) ar
RSC.org: Proton NMR
This video, distributed on YouTube by the Royal Society of Chemistry is on the basic principles of NMR. This video is a good primer and would be very useful to supplement introductory lectures on NMR. The video covers the basic theory behind a 1H spectrum and goes through actually acquiring a spectrum. The top-off look of the instrument is useful and how the superconducting magnet is mounted. Good for a basic introduction.
M.E. Muller Institute for Microscopy
This website is a nice primer for those who are interested in atomic-level surface imaging of biological samples with atomic force microscopy (AFM). The accompanying graphics are illustrative of what can be done and at what resolution. Note the material is a little dated (1996), but is still very useful. If one is interested in learning about biological imaging with other methods as well, it is recommended to open the home page site (http://www.mih.unibas.ch/Booklet/Booklet96/Intro/Intro.ht
LabVIEW for Instrumental Analysis
This site provides two useful resources for instructors and students of analytical chemistry. The first is a collection of LabVIEW virtual instruments (VIs) for demonstrating topics such as signal-to-noise ratios, boxcar and ensemble averaging, power spectra, digital filtering, analog-to-digital conversions, and the Nyquest frequency. For users that do not have a working copy of LabVIEW, executable versions are included that use LabVIEW\'s free run-time engine (Windows only). The second set of r
HPLC Tutorial 2,0 Video
This high quality video resource focuses on partition chromatography. The video presents an overview of basic separation theory and discusses instrumentation and data analysis. The size of the video (62.6 MB) almost requires a high speed internet connection. The resource can be downloaded to the user\'s computer, which is recommended for those with slower connections.
Laboratory Orientation and Testing of Body Fluids and Tissues for Forensic Analysts
This web site is part of the President\'s DNA Initiative and is devoted to an overview of historical and contemporary techniques to characterize body tissues. The first part of the course covers basic laboratory procedures, safety requirements for laboratory personnel and emphasizes quality control and quality assurance in the laboratory. The second section deals with serological techniques for characterizing specimens such as saliva, semen, blood and urine Identification and individual utilizin
HEAD Academy PBL Case Studies
This is site links to a part of the HEAD academy website that contains case studies relevant to chemistry and related scientific areas. Several of these sites are linked directly from ASDL (notably the Drip in the Dibble and Tales of a Riverbank). These case studies are in the form of downloadable zipped files containing pdfs that include materials to give to students as well as instructor guides. This makes them easy to implement on a local basis
This site provides an introduction to the use of multiple regression, beginning with a glossary of important terms before taking the reader through a review of bivariate regression and the implementation and interpretation of multiple regression. One limitation to the site is its reliance on Minitab for calculations. Users, however, can reproduce the calculations using other software packages, such as SPSS or Excel. Prior knowledge of the basics of bivariate regression is assumed; thus, the site
Concepts, Instrumentation and Techniques in Atomic Absorption Spectrophotometry
This pdf file contains a well written and thorough introduction to atomic absorption suitable for use by undergraduates and faculty teaching instrumental analysis courses. Topics covered in the document include theoretical concepts and definitions, flame atomic absorption, instrumentation, analytical interferences, sampling techniques, graphite furnace atomic absorption, and plasma techniques.
Rice virtual lab in statistics
This site is devoted to statistical tests and demonstrations of their use and was created with the support of the National Science Foundation. One section is a complete reference guide - the online statistics textbook, with detailed descriptions of all things statistical. The second, and most fun section, is simulations/demonstrations section where nearly twenty statistical tests are demonstrated with interactive Applets. Each Applet has clear instructions for use with details on the test demons
Japan’s Nuclear Crisis
In spite of the “sickening human and social devastation on full display” in northern Japan, moderator
Richard Samuels wonders, “Is it possible to follow the train of cause and effect into the future…imagining what happens from here on?” In this session convened just days after the March 11th earthquake and tsunami, pan
Building a Business: Taking the First Steps: Company Basics
Russell Smith, CEO of Business Boffins Ltd, presents the first lecture of the 2010/11 Building a Business lecture series.
2.2 The semiotic approach to textual meaning: image and ideology Think of an image of a celebrity winning an award. How is s/he photographed, dressed and accompanied? Perhaps the most likely image you thought of was a full-length or mid-shot of the celebr
Think of an image of a celebrity winning an award. How is s/he photographed, dressed and accompanied?
Perhaps the most likely image you thought of was a full-length or mid-shot of the celebr