 |
 |
|
|
Two programmes on one tape looking at the types and effects of radiation and its origins and methods of control.
Cost: (Schools) £24.95 + p. & p. + VAT
Cost: (Colleges and Universities) £34.95 + p. & p. + VAT
First of two programmes on one tape looking at the types and effects of radiation and its origins and methods of control.
This programme looks at the historical and modern day background of radiation and its effects. It begins with an introduction to the various types of ionising radiation: à - particles stopped by air and polythene film; - particles stopped by plastic sheet; - rays reduced using lead sheeting; X -rays; and neutron radiation with animated effect on water molecules and cell DNA structure, and photographs of actual chromosomal damage.
The programme then introduces the following terms commonly used when discussing radiological effects upon the human body: somatic effects; hereditary effects; Sievert (m and æ); and stochastic and non - stochastic effects.
Cost: (Schools) £24.95 + p. & p. + VAT
Cost: (Colleges and Universities) £34.95 + p. & p. + VAT
Second of two programmes on one tape looking at the types and effects of radiation and its origins and methods of control.
This programme looks at the common sources of radioactivity and current methods of control. The programme begins by looking at the common sources of radiation - cosmic, natural and manmade, and the definition of the Sievert (m and æ).
Comparison of manmade and natural sources of radiation are then made including: reprocessing and manufacture of nuclear fuels; fall out from weapons and Chernobyl; and other sources such as medical, cosmic, food, ground and radon.
Discussion of the exposure limits to radiation and attempts to decrease them (radon is used as an example) conclude the programme.
Cost: (Schools) £24.95 + p. & p. + VAT
Cost: (Colleges and Universities) £34.95 + p. & p. + VAT
Two series of 4 programmes each (Series 1: programmes 1 - 4 and Series 2: programmes 5 - 8) covering some of the techniques used in practical organic chemistry at A-level and degree level.
Cost series 1: £35.00 + p. & p. + VAT
Cost series 2: £35.00 + p. & p. + VAT
Cost (both series): £60.00 + p. & p. + VAT
A simple carbohydrate is methylated to introduce the equipment and techniques found in the organic laboratory. The demonstration includes: the apparatus to be used e.g. steam bath, 3 - necked flask, water cooled reflux condenser (Leibig) and drying tube; greasing a ground glass joint and attaching tubing to the condenser; methylation of the carbohydrate by refluxing sodium hydride, tetrahydrofuran, methyl iodide and the carbohydrate; discussion on the reaction mechanism; and methods of stirring including over head-silicon gland and motor, and magnetic-motor and follower.
The reaction is then followed step by step from elimination of excess sodium hydride by addition of industrial methylated spirits extraction of product using liquid/ liquid extraction.
12 minutes. 1987 PAL VHS tape
Cost: £9.95 + p. & p. + VAT
The following techniques and apparatus are introduced: (i) gravity filtration including fluting filter paper and filtration; (ii) vacuum filtration including Bchner and Hirsch funnels, filtration and drying of solid, and ending the vacuum filtration procedure correctly with an example of what happens if one does not; and (iii) rotary evaporation (of product from 1) including the rotary evaporator, distillation under reduced pressure, collection of solvent, removal of flask from evaporator and cleaning the ground glass connection.
10 minutes. 1987 PAL VHS tape
Cost: £9.95 + p. & p. + VAT
This programme introduces the technique of recrystallisation by considering the theory behind it. The programme also includes: (i) single solvent recrystallisation where the product from 2 is refluxed to dissolve in propan -2 -ol) and a hot filtration is demonstrated; (ii) mixed solvent recrystallisation with vacuum filtration of product; (iii) drying of products using an oven, and normal and vacuum desiccators; and (iv) determination of melting temperature (point) including demonstration of melting point apparatus and construction of melting point tubes.
9 minutes. 1987 PAL VHS tape
Cost: £9.95 + p. & p. + VAT
Distillation: (i) introduction to distillation; (ii) atmospheric distillation and apparatus involved; (iii) reduced pressure including apparatus such as a Vigreux fractionating column, water pump and manometer, air bleed, and finally the distillation procedure; (iv) steam distillation (brief) using a copper kettle as steam generator.
8 minutes. 1987 PAL VHS tape
Cost: £9.95 + p. & p. + VAT
Addition across an olefinic bond is a well used synthetic step. This programme looks at both the theory and the practice. Included: discussion of olefinic bonds with a look at ã and å - bonds and nomenclature of olefinic bonds including the Karning - Gold prelog system; reaction of double bonds as Lewis bases and introduction of Markownikoff's rule; and the reaction mechanism of the addition of bromine to 2-methylpropene.
The programme concludes with the a practical demonstration: the addition of bromine to (E) 1,2 -diphenylethene. The demonstration includes refluxing, vacuum filtration and melting point determination.
11 minutes. 1987 PAL VHS tape
Cost: £9.95 + p. & p. + VAT
The programme begins with a discussion of interconversion of Z and E alkenes with examples but -2 -ene, pent -2 -ene and methylpent -2 -ene. The specific reaction of maleic anhydride with sulphuric acid and methanol to produce dimethyl maleate is then discussed in some detail, focusing mainly on its mechanism.
The programme then proceeds to demonstrate the above reaction. Included in this demonstration: refluxing and solvent extraction following neutralisation; drying with anhydrous salt and filtration; and atmospheric and reduced pressure distillation. The programme concludes with a demonstration of the reaction of dimethyl maleate with iodine.
14 minutes. 1987 PAL VHS tape
Cost: £9.95 + p. & p. + VAT
The programme starts with a discussion on the mechanism of the Diels - Alder reaction using the reaction of 1,3-but-2-ene and ethene as example. Also covered is syn addition to double bond and the reaction of cyclopentadiene and maleic anhydride. The programme then gives a practical demonstration of the reaction of cyclopentadiene with maleic anhydride. Included: distillation of cyclopentadiene dimer using a Claisen head, condenser and receiving flask followed by drying with anhydrous calcium chloride; addition of maleic anhydride, cooling in ice/water and vacuum filtration; and hydrolysis of the anhydride to the dicarboxylic acid.
11 minutes. 1987 PAL VHS tape
Cost: £9.95 + p. & p. + VAT
The final programme in this series looks at catalytic hydrogenation. Included is a discussion on metal catalysts and hydrogenation looking at the mechanism of hydrogenation, syn-and anti- addition, and rearrangement reactions. The programme follows with a demonstration of the hydrogenation of endobornene cis - 5,6 -dicarboxylic acid using aqueous platinum (IV) chloride as catalyst and an oxygen free reaction environment.
11 minutes. 1987 PAL VHS tape
Cost: £9.95 + p. & p. + VAT
A good, general introduction to safety in the chemistry laboratory produced by chemistry students at Sheffield University. Areas covered are: dress (lab coats and eye ware); preparation (know one's experiment); glass ware (cutting and handling); good house keeping (how to deal with spills); fire risks (fires and how to deal with them); and safe working practices (when and how to use the fume cupboard).
9 minutes.
Cost: £25.00 + p. & p. + VAT
This video, backed up with written material, gives a clear introduction to theory and practice, leaving pupils confident in their new-found knowledge and skills. Covering all the basic concepts of infra-red spectroscopy, this programme includes:
bond characteristic frequencies
bond
vibrations
Conventional and Fourier Transform spectroscopy
energy
absorption
fingerprint region
functional groups
hydrogen
bonding
infra-red spectrum
peak broadening
transmittance
and
absorbance
TYPOs of IR absorptions
wavenumbers
This video comes with an accompanying booklet with graded problems and a full set of model answers, taking more enquiring pupils a little beyond the normal requirements of A-level. It is supplied unbound to enable easy photocopying.
40 minutes. 1996 PAL VHS tape
Cost: £15.50 + p. & p. + VAT
For students coming fresh to NMR spectroscopy, this video provides an ideal introduction to the subject. Potentially difficult subjects are explained clearly and accessibly, giving students the familiarity and understanding necessary for A-level and undergraduate courses.
Subjects covered include:
environments
chemical shifts
energy
gaps in the radio
frequency region
integration traces
magnetic nuclei
non-equivalent
protons
nuclear spin
proton free solvents
spin
multiplets
spin-spin coupling
splitting of nuclear energy levels
in a magnetic field
tetramethyl silane as a standard
the delta
scale
This video comes with an accompanying booklet with graded problems and a full set of model answers, taking more enquiring pupils a little beyond the formal requirements of A-level. It is supplied unbound to enable easy photocopying.
Suitable for A-level and chemistry undergraduate students.
21 minutes. 1995 PAL VHS tape
Cost: £15.50 + p. & p. + VAT
This programme explains the concept of symmetry-what symmetry actually is, the different types of symmetry and the relevance to chemistry. Throughout the programme non-chemistry illustrations are used to explain the concept and terminology, before applying these to chemical examples.
Areas covered include explanations of:
closed groups
identity
operations
improper rotary reflection
inversions
reflections
rotations
symmetry elements
symmetry operations
The differing effects of successive operations are also discussed.
This programme will be particularly useful for first, second and third year undergraduate chemistry students.
40 minutes. 1997 PAL VHS tape
Cost: a £35 + p. & p. + VAT
This programme is suitable for A-level chemistry students and first-year undergraduates and is presented by three final year chemistry undergraduates.
The three presenters take us round a supermarket identifying organic polymers and discussing how polymers structure determines its properties and therefore is potential applications. The chemistry involved is clearly explained using plenty of animation sequences.
Topics discussed include, what constitutes a polymer; addition and condensation production methods; and thermoplastics, elastomers and thermosets.
The programme also looks at the difference between crystalline and amorphous States, and shows how controlling these states can determine the rigidity, toughness and transparency of a polymer. There is also a section dealing with the enormous variety of polyamides and their diverse properties
This video concludes by looking at developments in co-polymer technology giving insight into the huge potential of this exciting area of research.
21 minutes. 1998 PAL VHS tape
Cost: £25.00 + p. & p. + VAT
Understanding materials is a series of five programmes made in conjunction with the Atomic Energy Research establishment, Harwell. They are designed to be used by sixth-form pupils and first-year undergraduates.
Series cost: £60.00 + p. & p. + VAT
This programme introduces the series by providing an overview of the subject. It looks in turn at metals, ceramics and glass, polymers and composites in terms of the classification and there atomic structure, microstructure and molecular structure. It concludes with a discussion about the value of material science and material scientists.
32 minutes. 1981 PAL VHS tape
Cost: £15 + p. & p. + VAT
This programme aims to stimulate interest in the science of materials rather than to teach hard facts. It first considers what metals are, what distinguishes one metal from another, and metals as a whole from non-metals. Moving on, the programme deals with four specific uses of metals: steel for oil rigs, stainless steel for surgical scalpels, bronze for bells and aluminium for aircraft.
47 minutes. 1980 PAL VHS tape
Cost: at £15 plus p and p
This third programme in the series deals with the science of ceramics under the following headings: chemistry, glasses, fabrication, sintering and microstructure, with a final section on properties which also mentions and illustrates many applications of ceramics to modern technology.
40 minutes. 1980 PAL VHS tape
Cost: at £15 plus p and p
This programme defines what glass is and then goes on to discuss fabrication, structure and composition. Three specific qualities of glass-durability, strength and optical properties-are dealt with, and the programme concludes with a section on fibre optics.
29 minutes. 1981 PAL VHS tape
Cost: £15 plus p and p
In this programme of the nature of organic polymer structure is discussed, with illustrations.
42 minutes. 1982 PAL VHS tape
Cost: £15 plus p and p
This programme explains a metal shaping process researched and developed at Sheffield. This process is called 'Thixoforming', and it falls within a generic class of processes called semi-solid metal forming - SSM.
The programme begins by looking at the traditional approaches of casting and forging, highlighting the benefits and drawbacks of each process. Thixoforming is believed to combine the benefits of these two techniques while removing the drawbacks.
By using live action combined with animated graphics, the programme follows the thixoforming process from the initial cut billet extruded tool steel right through to a formed product. The thixotropic properties of a billet of aluminium alloy which has been brought to its semi-solid state is strikingly demonstrated.
10 minutes 1995 PAL VHS tape
Cost: £35.00 + VAT
A series of five programmes informing all those whose everyday work brings them into contact with ionising radiation about safety measures as laid down by EU directives. The series is also available in French. Teaching notes are included.
Series cost: £225.00 + VAT
This programme covers the basic scientific concepts necessary to understand radiation safety and protection. It introduces the concept of ionising radiation in terms of natural and everyday phenomena and gives a brief description of the physics involved. It assesses the penetrating powers of different radiations, describes biological effects on people and finally points the way towards achieving radiation protection in practice.
20 minutes 1985 PAL VHS tape
Cost: £55.00 + VAT
this module describes what is measured (activity, energy, exposure, absorbed dose, dose equivalent) and the units used for such measurements. Knowledge of these terms is essential to safe protection.
20 minutes 1984 PAL VHS tape
Cost: £55.00 + VAT
This module considers the external hazard; fields of radiation; beams of radiation; the internal hazard with special reference to ingestion, inhalation, penetration through the skin and absorption through the skin; surface contamination, with special reference to the significance of radioactive particulates and radioactive gases; and the relative risks from the common radiations with regard to external and internal hazards.
18 minutes 1984 PAL VHS tape
Cost: £55.00 + VAT
This programme deals with the protection against external hazard in terms of shielding distance and time. Each of these concepts are discussed in both theoretical and practical terms.
22 minutes 1983 PAL VHS tape
Cost: £55.00 + VAT
This programme explains how the limitations of measuring equipment determine the choice of specific instruments and how they work, with some reference to the processes involved; gives advice on undertaking a survey of the external radiation hazard and explains the value of professional advice.
31 minutes 1984 PAL VHS tape
Cost: £55.00 + VAT
This programme observes the drilling of two 60m boreholes into mixed measures and sandstone beds, using Rotary Percussion Drilling. An analysis of 1m interval samples shows how the actual geology differed from the published geological maps. The holes are artesian, and the fitting of piezometer tubing and the subsequent capping of the holes is shown. The programme ends by showing field instrumentation being used to investigate aquifer properties and to measure the chemical properties of the groundwater.
20 minutes 1997
Cost: £65.00 + VAT + p&p
Cost (Higher Education establishments): £35.00 + VAT + p&p
[ Chemistry Images Post_16 Front Page | Publisher Address Index | Publisher and Programme Title Index | Keyword Index ]
[ANGLESEY ALUMINIUM - RTZ | BBC STUDIES | BOULTON-HAWKER FILMS LIMITED | CFL VISION | CHEMICAL INDUSTRIES ASSOCIATION | CONCORD VIDEO AND FILM COUNCIL | CLASSROOM VIDEO | ETSU: NEW AND RENEWABLE ENERGY RESOURCES BUREAU | FOCAL POINT AUDIO VISUAL LTD. | FILMS FOR THE HUMANITIES AND SCIENCES | INSTITUTE OF CHEMICAL ENGINEERS | JOURNAL OF CHEMICAL EDUCATION SOFTWARE | LABORATORY OF THE GOVERNMENT CHEMIST | LEEDS UNIVERSITY TELEVISION | NEW MEDIA | OPEN UNIVERSITY | RESOURCES IN TRAINING AND EDUCATION LTD. | ROYAL SOCIETY OF CHEMISTRY | SHEFFIELD UNIVERSITY TELEVISION | SHOTLIST - EBS TRUST | THE VEGA SCIENCE TRUST | VIEWTECH EDUCATIONAL MEDIA 1 (Formerly EDUCATIONAL MEDIA FILM & VIDEO LTD. Catalogue) | VIEWTECH EDUCATIONAL MEDIA 2 (Formerly VIEWTECH FILM AND VIDEO Catalogue - Includes new material) | THE WELLCOME TRUST | UNIVERSITY OF YORK - CENTRE FOR ANALYTICAL SCIENCE AND INSTRUMENTATION | YORK FILMS OF ENGLAND ]