WorldCat Identities

Northey Productions Ltd

Overview
Works: 163 works in 254 publications in 2 languages and 2,409 library holdings
Genres: Educational films  Internet videos  History  Juvenile works  Nonfiction films  Animated films 
Classifications: QP90.4, 537.2
Publication Timeline
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Most widely held works by Northey Productions Ltd
The Special theory of relativity( Visual )

4 editions published in 2007 in English and held by 219 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 )

4 editions published in 2007 in English and held by 219 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 )

4 editions published in 2007 in English and held by 219 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
Geometric optics : refraction( Visual )

4 editions published in 2007 in English and held by 213 WorldCat member libraries worldwide

23 computer-animated video shorts showing the behavior of light as it passes through various physical substances
Geometric optics : reflection( Visual )

4 editions published in 2007 in English and held by 211 WorldCat member libraries worldwide

This collection of computer-animated video shorts explores light as it pertains to reflection, including the principles involved with mirrors
Metals and ionic solids( Visual )

3 editions published between 1984 and 2005 in English and held by 67 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
Geography skills( Visual )

1 edition published in 1995 in English and held by 61 WorldCat member libraries worldwide

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

3 editions published between 1984 and 2005 in English and held by 61 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
Conductors and insulators( Visual )

3 editions published between 1986 and 2005 in English and held by 47 WorldCat member libraries worldwide

Establishes some of the fundamental principles of electrostatics, such as negative and positive charges. Illustrations of the electron flow in charged particles at the atomic level show the difference between conductors and insulators
Charging by induction( Visual )

1 edition published in 1992 in English and held by 43 WorldCat member libraries worldwide

Reviews the concepts of charging by contact and discharging by grounding illustrates how a charged rod affects an electroscope. One application of charging by induction is demonstrated with a simulation of the action of lightning during a thunderstorm
Protein synthesis( Visual )

2 editions published between 2003 and 2005 in Spanish and English and held by 35 WorldCat member libraries worldwide

An animated discussion of protein synthesis. Discusses the variety of proteins, DNA, DNA replication, types of RNA, and RNA Transfer
Photosynthesis( Visual )

2 editions published between 1984 and 1992 in English and held by 32 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 28 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 28 WorldCat member libraries worldwide

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

1 edition published in 1992 in English and held by 26 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
Wave-particle duality( Visual )

2 editions published between 1984 and 1992 in English and held by 25 WorldCat member libraries worldwide

Explains the behavior of light from the concepts of the ancient Greeks to the proven wave-particle models of today
Biochemical balances( Visual )

2 editions published between 1984 and 1992 in English and held by 24 WorldCat member libraries worldwide

Introduces the chemical processes of competitive inhibition in the production of enzymes, and the law of mass action: the natural tendency for chemical reactions to act in two directions
Osmoregulation( Visual )

2 editions published between 1984 and 1992 in English and held by 24 WorldCat member libraries worldwide

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

2 editions published between 1984 and 1992 in English and held by 24 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
The concept of energy flow( Visual )

2 editions published between 1984 and 1992 in English and held by 22 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
 
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Audience level: 0.19 (from 0.12 for Conductors ... to 0.33 for Biochemica ...)

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