WorldCat Identities

Northey Productions Ltd

Overview
Works: 138 works in 240 publications in 2 languages and 1,808 library holdings
Genres: History  Juvenile works  Pictorial works 
Classifications: QK882, 572.46
Publication Timeline
Key
Publications about Northey Productions Ltd Publications about Northey Productions Ltd
Publications by Northey Productions Ltd Publications by Northey Productions Ltd
Most widely held works by Northey Productions Ltd
Geometric optics refraction ( Visual )
6 editions published in 2007 in English and held by 151 WorldCat member libraries worldwide
The speed of light is constant in a vacuum-but what about in the everyday world? This collection of 23 computer-animated video shorts examines the behavior of light as it passes through physical substances. Outlining Ptolemy's Law of Refraction and the concept of angle of incidence, the program examines light's motion through air, water, glass, and other media. Snell's Law, highlighting the importance of a refractive index, is explored, along with displacement, deviation, dispersion, and the role of refraction in fiber optics. Lens types including bi-convex, convex meniscus, plano-convex, and concave models are studied, in addition to telescopes, magnifying glasses, and the human eye
The Special theory of relativity ( Visual )
3 editions published in 2007 in English and held by 106 WorldCat member libraries worldwide
How did 20th-century physics change long-held notions of light's makeup and behavior? This group of 12 concise computer-animated videos illustrates Einstein's monumental contributions to the study of light. Showing how rudimentary ideas of material wave motion yielded to more advanced concepts of electromagnetic waves, the program details Einstein's conclusions about the speed of light and his conception of time-which, given his findings on mass and energy, proceeds according to variable frames of reference. Relativistic thought experiments, conveyed through helpful animation, demonstrate simultaneity, time dilation, length contraction, and relativistic mass
The Quantum leap photons and light particles ( Visual )
3 editions published in 2007 in English and held by 106 WorldCat member libraries worldwide
Exploring the antithesis of the wave model, this album of eight computer-animated video segments looks at the particle approach to studying light. Black-body radiation, Planck's constant, the Photoelectric Effect, and the work of James Clerk Maxwell are presented as forerunners to Einstein's concept of photon frequency. Examples of a slope intercept graph and a revised double-slit experiment using light-sensitive paper segue to an illustration of the Compton Effect, establishing that light consists of a stream of particles. De Broglie's contributions introduce wave-particle duality-which some might consider a muddy solution, although it represents the best that current science can do
The Wave nature of light ( Visual )
3 editions published in 2007 in English and held by 105 WorldCat member libraries worldwide
Is light composed of waves or particles? This collection of 17 computer-animated video modules explores the wave model of light, from its earliest roots to our modern understanding of electromagnetism. Empedocles' belief that light streams from the eye, Aristotle's conception of light as a disturbance in ether, and Euclid's mathematical, ray-centered paradigms are all explored. The Cartesian sine wave model, Huygens' principle of bending wave fronts, the electromagnetic spectrum, and aspects of particle theory are also presented, along with overviews of diffraction, interference, polarization, and dispersion, and an explanation of Young's double-slit experiment
Protein synthesis ( Visual )
5 editions published between 1984 and 2005 in English and Spanish and held by 47 WorldCat member libraries worldwide
Emphasises the importance of proteins as the basic building blocks of life and the fundamental role that protein synthesis plays in all living things. Each sequence explores one aspect of the process, from the manufacture of DNA to the roles of the messenger and transfer RNA. Computer animation provides clear demonstrations that make this complex subject easily understood
Wave-particle duality ( Visual )
6 editions published between 1984 and 2005 in English and held by 39 WorldCat member libraries worldwide
Explains the behavior of light from the concepts of the ancient Greeks to the proven models of today. Suggested audience: secondary
Photosynthesis ( Visual )
2 editions published between 1984 and 1992 in English and held by 36 WorldCat member libraries worldwide
Demonstrates how chlorophyll in plants absorbs and transfers captured light energy to other molecules and eventually creates energy storage molecules such as glucose
Metals and ionic solids ( Visual )
3 editions published between 1984 and 2005 in English and held by 33 WorldCat member libraries worldwide
Shows the common properties of metal (conductivity and maleability) and explains the types of bonding that occur between metal atoms. The properties of metals, which are covalent solids, are contrasted with those of crystals, which are ionic solids. Animated
The feedback cycle ( Visual )
1 edition published in 1992 in English and held by 33 WorldCat member libraries worldwide
Describes the feedback cycle, the ongoing monitoring of homeostasis to inhibit or stimulate the release of hormones. Shows how negative feedback works and the many ways the body responds to messages from receptors
The meiotic mix ( Visual )
1 edition published in 1992 in English and held by 32 WorldCat member libraries worldwide
Explains the difference between mitosis and meiosis. Shows how variations are generated by chromosomes matching during meiosis
Structure of the atom ( Visual )
7 editions published between 1984 and 2005 in English and held by 32 WorldCat member libraries worldwide
Explores the history and development of the model of the atom from the hypotheses of early Greek philosophers to the wave-mechanical model of modern atomic physicists. Examines experiments by pioneer atomic scientists
Homeostasis ( Visual )
2 editions published in 1992 in English and held by 32 WorldCat member libraries worldwide
This program takes a look at the role played by hormones in maintaining homeostasis, illustrating how hormone production stimulates reactions and, in turn, how hormone production is monitored
The Sea within ( Visual )
2 editions published between 1984 and 1992 in English and held by 31 WorldCat member libraries worldwide
Looks at how body fluids are adjusted and balanced to match internal needs to external conditions. Describes the five mechanisms of homeostasis that control body fluids
Nuclear physics ( Visual )
5 editions published between 1985 and 2005 in English and held by 27 WorldCat member libraries worldwide
Shows how an interest in cathode rays led scientists to discover X-rays, then alpha, beta, and gamma radiation, and finally to explore the conversion of matter into energy. Clarifies the concepts of nuclear fission and nuclear fusion, and tells how a nuclear reactor works
Osmoregulation ( Visual )
1 edition published in 1992 in English and held by 27 WorldCat member libraries worldwide
Explores the process of osmoregulation, using as an example the complex filtering process that takes place in the kidneys
Introducing the players ( Visual )
3 editions published between 1984 and 2005 in English and held by 27 WorldCat member libraries worldwide
Introduces the atom and the three main sub-atomic particles - the electron, the proton, and the neutron. The location, charge, and relative mass of these particles are demonstrated
The concept of energy flow ( Visual )
2 editions published between 1984 and 1992 in English and held by 26 WorldCat member libraries worldwide
Utilizes the second law of thermodynamics to explore the concept of èntropy', using for study purposes a closed system represented by a disabled space shuttle
Geography skills ( Visual )
1 edition published in 1995 in English and held by 24 WorldCat member libraries worldwide
This computer-animated series provides an in-depth examination of the important skills of the geographer
Energy flow at the cellular level ( Visual )
2 editions published between 1984 and 1992 in English and held by 24 WorldCat member libraries worldwide
Examines energy flow at the cellular level, where a single cell is likened to a micro-ecosystem
Coping with change ( Visual )
1 edition published in 1992 in English and held by 24 WorldCat member libraries worldwide
Introduces a basic model for the concept of homeostasis. Uses examples of how the body responds to external changes in environment
 
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Audience Level
0
Audience Level
1
  Kids General Special  
Audience level: 0.40 (from 0.06 for Geography ... to 0.56 for Geometric ...)
Languages
English (58)
Spanish (1)