WorldCat Identities

Northey Productions Ltd

Overview
Works: 132 works in 240 publications in 2 languages and 2,237 library holdings
Genres: History  Juvenile works  Educational films  Nonfiction films  Animated films  Pictorial works 
Classifications: QK882, 541.2
Publication Timeline
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Most widely held works by Northey Productions Ltd
Geometric optics refraction( Visual )

8 editions published in 2007 in English and held by 317 WorldCat member libraries worldwide

What does a mirror tell us about light? This cluster of 11 computer-animated video units delves into one aspect of light's behavior-reflection. Euclid's geometric optics and his findings on the perception of distance and perspective lead to a discussion of the Law of Reflection-linking angle of incidence with angle of reflection-and the concepts of absorption, transmission, and diffuse reflection. The principles involved with plane, concave, and convex mirrors are explained, including vertex, principle axis, center of curvature, radius of curvature, and virtual image. A group of "mirror equations" show how an object's location can be determined using the laws of reflection
The Special theory of relativity( Visual )

4 editions published in 2007 in English and held by 166 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 )

5 editions published between 2006 and 2007 in English and held by 166 WorldCat member libraries worldwide

This collection of computer-animated video shorts explores the particle approach to studying light
The Wave nature of light( Visual )

4 editions published in 2007 in English and held by 166 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
Metals and ionic solids( Visual )

3 editions published between 1984 and 2005 in English and held by 96 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
Introducing the players( Visual )

3 editions published between 1984 and 2005 in English and held by 89 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
Geography skills( Visual )

1 edition published in 1995 in English and held by 88 WorldCat member libraries worldwide

This computer-animated series provides an in-depth examination of the important skills of the geographer
Protein synthesis( Visual )

5 editions published between 1984 and 2005 in English and Spanish and held by 45 WorldCat member libraries worldwide

Explains the importance of proteins as the basic building blocks of life and the fundamental role that protein synthesis plays in all living things. Explores the different aspects of the process from the manufacture of DNA to the roles of the messenger and transfer RNA
Wave-particle duality( Visual )

6 editions published between 1984 and 2005 in English and held by 34 WorldCat member libraries worldwide

Traces the development of various theories advanced to explain the behaviour of light from early Greek models through the work of Isaac Newton, Christopher Huygens, Thomas Young, Jean Foucault, James Maxwell, Max Planck, Albert Einstein, Arthur Compton, Geoffry Taylor and Louis de Broglie
Photosynthesis( Visual )

2 editions published between 1984 and 1992 in English and held by 34 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
The feedback cycle( Visual )

1 edition published in 1992 in English and held by 31 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
Structure of the atom( Visual )

7 editions published between 1984 and 2005 in English and held by 30 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 30 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 meiotic mix( Visual )

1 edition published in 1992 in English and held by 29 WorldCat member libraries worldwide

Explains the difference between mitosis and meiosis. Shows how variations are generated by chromosomes matching during meiosis
The Sea within( Visual )

1 edition published in 1992 in English and held by 27 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
Osmoregulation( Visual )

1 edition published in 1992 in English and held by 25 WorldCat member libraries worldwide

Explores the process of osmoregulation, using as an example the complex filtering process that takes place in the kidneys
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
Nuclear physics( Visual )

5 editions published between 1985 and 2005 in English and held by 24 WorldCat member libraries worldwide

Explores the nature of radioactivity through an historical overview of the scientific developments that led to its discovery including the works of Faraday, Rontgen, Marie Curie, Becquerel, Einstein and Fermi. It looks at radioactive decay and the conversion of mass to energy in the chain reactions of nuclear fission. It shows the basic model of a nuclear power plant, and outlines the problem of nuclear waste
The concept of energy flow( Visual )

1 edition published in 1992 in English and held by 23 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
Electrochemistry( Visual )

3 editions published between 1986 and 2005 in English and held by 23 WorldCat member libraries worldwide

Shows how the common, everyday battery works and the basic principles involved with it. Illustrates the terminology and processes of electrochemical reactions, how half-cell potentials can be determined, and how electrochemistry is at work in the commercial Leclanché cell, as well as the processes of corrosion and electrolysis
 
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Audience level: 0.24 (from 0.16 for The concep ... to 0.36 for Wave-parti ...)

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