Pesach: The Story and the Holiday (Passover)
A description of the story of Pesach and a brief overview of how the holiday is celebrated. Pesach (Passover) Pesach is an eight-day holiday that celebrates the Exodus of the Hebrews from Egypt and our freedom from oppression in modern days. This is a slow moving video of ten minute duration that clearly explains the background of the celebration and the individuals involved. The images are difficult to understand at times. A good video for all ages and easy to follow.
D-Day Invasion of Europe (2:01)
On June 6, 1944, Allied troops storm the beaches of Normandy in the largest amphibious assault in history. This is a good video that explains what happens on this day and has excellent graphics and clear explanations. A map of the area would be of benefit.
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.
Project Noah is a tool to explore and document wildlife and a platform to harness the power of citizen scientists everywhere.
A retrospective look at space shuttle Atlantis.
A retrospective look at space shuttle Endeavour.
Nasdaq, ICE go after NYSE
Summary of business headlines: Nasdaq OMX, ICE offer $11.3 billion for NYSE Euronext; U.S. job growth near one-year high; Gas prices slow U.S. auto sales; Wall Street continues rally.
From unemployed to entrepreneur
Exasperation leads to inspiration for one man who was laid off twice before starting his own internet company.
Analytical Chemistry 2.0
A complete textbook for Quantitative Analysis is freely downloadable. Teach yourself Analytical Chemistry, or be part of a class on the subject.
The Laboratory Notebook
This site provides well-organized instructions for keeping a laboratory notebook. In addition to the providing an overview of general rules and organization, the site also discusses organization of conclusions around three central types of outlines for measurement experiments, synthesis experiments and reporting of physical phenomena.
James Hardy has produced a number of powerpoint type lecture modules for analytical chemistry. This is another very good module that covers the introductory theory of chromatography. Includes chromatography types, plate and kinetic theories. Level of presentation is at the introductory analytical chemistry level. It is a colorful and well planned presentation of the introduction to chromatography that could be used as the basis for lectures on chromatography at the introductory analytical chemis
DNA Evidence Training
These training modules are intended to provide interactive training that covers basic information about the identification, preservation, and collection of DNA evidence at virtual crime scenes related homicide, sexual assault, and burglary. Information addressed in this interactive training program is delivered in two modules. The Beginning Level Module focuses on issues that arise for the first-responding law enforcement officer. The Advanced Level Module delivers more in-depth information for
Optical Tweezers: Measuring Piconewton Forces
This is a comprehensive reference article for optical tweezers technology. It outlines application of this technique in the piconewton force measurement for biological samples. The article includes principle of the technique, calibration, and examples of the use of this technique in one single article. The paper is easy to read, self-contained, and complete. It supplies a good mix of theory and application, with interesting descriptions involving measurements with RNA and DNA. One needs to have
Atomic Force Microscopy
A video lecture on Atomic Force Microscopy (AFM) by Prof. Arvind Raman of Purdue University that discusses the historical development, instrumentation and operational principles of various AFM modes. The lecture is accompanied by power point slides with clear illustrative graphics. Basics are provided in the application examples with advantages and limitation discussed. Useful site to those interested in learning AFM.
Population Genetics and Statistics
This website is part of the President\'s DNA Initiative and is devoted to past and current methods of macromolecules such as DNA. This website introduces the student to the subject of population genetics and stresses factors that can alter allele frequencies in a population and calculations associated with the Hardy-Weinberg principle. The student will learn to use acceptable statistical approaches to evaluating DNA data and how DNA databases are constructed and applied. This site is designed as
A Pictorial Representation of Product Operator Formalism: Non-Classical Vector Diagrams for Multidim
This site presents a pictorial description of the product operator formalism using a non-classical vector approach. This approach allows for the representation of any arbitrary multidimensional or heteronuclear NMR experiment. A description of a complete set of 16 vector representations for weakly-coupled two-spin (I=1/2) systems is given followed by an extension of this set to three-spin systems. Finally the concepts of coherence transfer, multiple quantum spectroscopy and phase cycling are ill
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