Introduction to Chemistry
This is one of the longer (but, excellent!) videos on WatchKnow, however, the viewer will see that the video is digestable in small chunks. The video has been cut into small 'segments' or 'chapters' on the side. This is one of the free videos on Educator.com; the rest require a subscription fee.
"This lecture is an Introduction to Chemistry. Instructor will go over Chemistry as an Experimental Science which studies changes in matter and Energy Distribution before delving into Propertie
Carnegie Observatories' Wendy Freedman On Hubble and Size of Universe
This spring, Director of the Carnegie Observatories Wendy Freedman spoke at the American Museum of Natural History's Hayden Planetarium about astronomer Edwin Hubble's discovery of the galaxies and the expansion of the universe, how astronomers measure vast distances, and how the Hubble Space Telescope is used to measure the size and age of the universe. Mike Shara, curator in the Department of Astrophysics, sat down with Freedman for an interview in the Hayden Planetarium to discuss the expansi
Beetle larvae devour dead frog
Read more:
http://www.newscientist.com/blogs/nstv/2011/04/time-lapse-tuesday-beetle-larvae-devour-dead-frog.html
Leading@Google: Joseph Grenny
Joseph Grenny spoke to Googlers in Mountain View on April 14, 2011 about the book he co-authored: Change Anything: The New Science of Personal Success.
About Change Anything:
"A stunning new approach to how individuals can not only change their lives for the better in the workplace, but also their lives away from the office, including (but not limited to) finding ways to improve one's working relationship with others, one's overall health, outlook on life, and so on.
For example, why is it th
Holocaust Survivor Testimony: Avraham Aviel
Avraham Aviel was born in 1929 in Dugalishok, a Jewish farming village (today in Belarussia), to Moshe David and Sarah Mina née Lipkunsky. Moshe David was a blacksmith and Sara Mina came from a rabbinical family in Eišiškis, Lithuania.
At the end of 1941, the Jews of Dugalishok were sent to the Radun ghetto. On 10 May 1942, Avraham, his mother, his brothers and the rest of the ghetto residents were taken to a death pit near the cemetery in Radun. There, most of them, including Sara Mina and
Activity 7 «Video documentation of work progress»
Description not set
Arab youths, revolutions, and the rise of the ‘second society’
The patterns of revolutions tend to be similar, focusing on the rise and fall of their leaders, a plunge into lawlessness, and finally a new order. Today’s movement in the Arab world is different. Sami Mahroum, Director of INSEAD’s Innovation & Policy Initiative in Abu Dhabi, explains why.
Valerius Catullus - Carmina X
Application of [Lambda] to the fourth perturbation theory in calculating the equation of state of ra
We have calculated the thermodynamic properties of monatomic fcc
crystals from the high temperature limit of the Helmholtz free energy.
This equation of state included the static and vibrational energy
components. The latter contribution was calculated to order A4 of perturbation
theory, for a range of crystal volumes, in which a nearest
neighbour central force model was used. We have calculated the lattice
constant, the coefficient of volume expansion, the specific heat at
constant volume and a
An investigation of geological and geochemical characteristics of late-Quaternay sediments in the Ge
Core samples of postglacial sediments and sediment
surface samples from Shepherd Lake on the Bruce Peninsula,
Harts Lake on the Canadian Shield, and two cores from Georgian
Bay (core P-l in the western deep part and core P-7 in the
eastern shallow part) have been analyzed for pH, grain size
distribution, water content, bulk density, loss on ignition
at 4500C and 11000 C, major oxides (Si02 ,A1203,!FeO,MgO,CaO,
Na20,K20,Ti02 ,MnO and P205) and trace elements (Ba,Zr,Sr,y,S,
Zn,Cu,Ni,Ce and Rb).
Th
A contingency model of job satisfaction
The present research study was designed to test a contingency
model of job satisfaction based on participation in decision making
as the antecedent variable and job involvement as the intervening
variable. The instruments used to measure the variables were the
participation in decision making scale developed by Siegel and Ruh
(1973), the job involvement scale by Lodahl and Kejner (1965) and the
job satisfaction construct derived from Hoppock (1935).
The findings indicate that statistically signi
Genetic variation and evolutionary divergence within and among populations, species, and genera of t
Seven crayfish species from three genera of the subfamily Cambarinae
were electrophoretically examined for genetic variation at a total of
twenty-six loci. Polymorphism was detected primarily at three loci:
Ao-2, Lap, and Pgi. The average heterozygosities over-all loci for each
species were found to be very low when compared to most other invertebrate
species that have been examined electrophoretically.
With the exception of Cambarus bartoni, the interpopulation genetic
identities are high withi
Guide to the Records of the Kingsley Association, 1894-1980
The Kingsley Association was formed in 1893 by George Hodges as a Pittsburgh settlement house. The collection includes: administrative and annual reports, books, brochures, budget information, case studies, clippings, correspondence, directories, minutes, photos and surveys spanning intermittent years from 1894-1980.
Guide to the Records of the Civic Club of Allegheny County, 1896-1967
The mission of The Civic Club of Allegheny County has been "to promote by education and organized non-partisan effort a higher public spirit and better social order." This collection contains Civic Club by-laws and constitution; minutes of annual, board of directors, and committee meetings; records documenting The Civic Clubs's legislative campaigns and social services; and voter directories for general and primary elections between 1930 and 1973.
Guide to the Records of the Young Friends of North America, Committee on Conscription, 1968-1969
The Young Friends of North America, whose members were between the ages of 18-30, established a Committee on Conscription in the fall of 1968. The Committee on Conscription facilitated communication among members who were involved with draft resistance. The Committee also collected information from members who have resisted the draft since the 1940's and from those who were imprisoned for draft resistance. This collection contains photocopies of memoranda, minutes, questionnaires, brochures, bro
Photographic Prints of Robert A. Cummings, Jr., c.1950's
This collection contains photographic prints of Robert A. Cummings, Jr. The 67 photographic prints from the decade of the 1950's are of the Pittsburgh Area.
Papers of Abraham L. Wolk, 1937-1968
Abraham L. Wolk was born in 1891 and was a Pittsburgh jurist and a former Pittsburgh city councilman whose interests included smoke control, industrial health programs, the "Pay-as-you-go" tax program, and the Civic Light Opera. The collection contains correspondence, memoranda and notes, writings, speeches, memorabilia, photographs and scrapbooks. The scrapbooks have been microfilmed.
Guide to the Records of the Grace Reformed Church, Pittsburgh, PA, 1853-1964
This collection contains the records of the Grace Reformed Church, Pittsburgh, PA 1853-1964 and relates primarily to financial information and organizational infrastructure. These records include bank ledgers, statements, receipts, bills of sale, church programs, bulletins, missals, sermons, member lists, burial records, correspondence, meeting minutes, memoranda, and miscellaneous medias.
Luigia Clerici Papers, 1898-1899
The Papers of Luigia Clerici consist of a collection of handwritten notebooks and workbooks in Italian, describing methods of instruction and curriculum in the schools of Bologna, Italy, in the 1890's.
Guide to the Westinghouse Electric and Manufacturing Company Contracts, Pittsburgh, PA., Collection
Business records of Westinghouse Electric Manufacturing Company, East Pittsburgh, Pa., 1892-1901. Collection documents acquisitions of machinery and technology such as cranes, presses, drills, and pumps. Records include blueprints, photographs, carbon copies of telegrams, signed forms, memorandums, and correspondence.
