Bulletin 68 Complete

The page numbers refer to the pages in the pdf. (The numbers in brackets are those given in the actual bulletin)

3(1) Introduction

Future exhibitions

3(1) Opinion

Follow the leader

5(3) VLF generator

Apparatus for measuring the beat frequency of two pendulums of unequal length can be modified to make a VLF generator.

6(4) ‘O’ grade microscopes

7(5) Constant current power supply

There would seem to be an increasing requirement for a constant current power supply for use in coulometric titrations,

8(6) Chemical kinetics model

A wind machine which models how the rate  of reaction of substances could be affected by such things as temperature, activation energy etc.

9(7) In The Workshop – chemical kinetics model

How to build the model referred to above.

11(9) Bulletin Supplement – ‘O’ grade microscopes

A review of currently available models.

14(12) Address List

Bulletin 69 Complete

The page numbers refer to the pages in the pdf. (The numbers in brackets are those given in the actual bulletin)

3(1) Introduction

Electronic calculators

3(1) Opinion  

Mains muddle

4(2) Surplus physics equipment

6(4) Gas chromatograph

Details of a DIY device

9(7) Electronic Calculators

A review of 4 models

12(10) In The Workshop – gas chromatograph

How to make a working DIY gas chromatograph.

14(12) Address List

Bulletin 70 Complete

The page numbers refer to the pages in the pdf. (The numbers in brackets are those given in the actual bulletin)

3(1) Introduction

Disposal of hazardous chemicals

4(2) Pen recorder as a timing device

The use of a high speed pen recorder as a timing device may seem uncalled—for sophistication, but this is only one of several uses of a modestly priced instrument.

6(4) Decomposition of ammonia

Sparking ammonia gas over liquid paraffin is suggested as a demonstration experiment in Section M2 of the chemistry syllabus.

7(5) A fatal experiment

Report from Australia of a solid rocket propellant, using potassium and sulphur chlorate (sic)

7(5) Thermochromic liquid recipe

Thermochromic liquid for illustrating convection current is simple to make in the laboratory.

7(5) Trade News

9(7) Electronic Calculators

A detailed review of various models.

12(10) Address List

13(11) Bulletin Index Nos. 60—69

Bulletin 71 Complete

The page numbers refer to the pages in the pdf. (The numbers in brackets are those given in the actual bulletin)

3(1) Introduction

SSSERC domestic arrangements Page 1

3(1) Component tester

The component tester to be described allows one to make a quick check on the value of any impedance, linear or non-linear.

4(2) Air track velocities, correction

Chart in Bulletin 70 upside down.

4(2) Electrostatic field demonstration

An alternative method for generating an electrostatic field.

5(3) Blow pipes for natural gas

We have had discussions with Scottish Gas on blowpipes suitable for natural gas.

7(5) Heats of neutralisation

The  Central Commitee on Chemistry asked us to carry out an investigation on this using school type apparatus.

8(6) Clinistix test strips

‘Clinistix’ have proved extremely useful in school biology courses there may be some teachers who do not like using them because of the possibility of carcinogenic effects, We will describe the history and background to this problem.

9(7) Ash content determinations

Ash content determinations of plant material are often time—consuming and tedious. We describe an alternative method – the oxygen-flask method

12(10) Trade News

14(12) Address List

Bulletin 72 Complete

The page numbers refer to the pages in the pdf. (The numbers in brackets are those given in the actual bulletin)

3(1) Introduction

CSYS physics experimental guide produced, adding machines.

3(1) Pelican crossing sequence

There recently appeared in a School Science Review details of how to construct a circuit to execute the pelican crossing sequence of traffic lights. We offer a cheaper method.

10(8) Surplus equipment available

12(10) Combustion of ammonia

Generally text–books state that ammonia will not burn in air, but it can in fact be made to burn.

13(11) Bulletin Supplement – ‘O’ grade microscopes

A list of test reports available.

14(12) Address List

Bulletin 73 Complete

The page numbers refer to the pages in the pdf. (The numbers in brackets are those given in the actual bulletin)

3(1) Introduction

Future bulletins and envelope shortages, Colin Weatherley leaves, Scottish Science Advisers Group, Annual subscription

5(3) Opinion

Didacta

6(4) Photomicrography

We have developed a method in which the microscope is used to produce an enlargement directly by projection

9(7) Dilution for waste disposal

We describe apparatus that shows a safe method of diluting solutions which are to be disposed of as waste and which require to be diluted before emptying into the drains,

9(7) Silver recovery

We describe a method for recycling silver waste.

10(8) Trade News

11(9) In The Workshop – constant volume dispenser

We describe simple apparatus that will put equal or nearly equal quantities of some liquid reagent into several receptacles.

12(10) ‘Smoking doll’ for lung contamination

In Bulletin 38 we described an apparatus used to demonstrate lung contamination by smoking. The ‘smoking doll’ is probably no more effective but possibly more fun.

14(12) Address List

Bulletin 74 Complete

The page numbers refer to the pages in the pdf. (The numbers in brackets are those given in the actual bulletin)

3(1) Introduction

Integrated Science Equipment List – being duplicated, out soon.

4(2) Surplus equipment available

8(6) Griffin basic microbiology kit

A response from Griffin to some comments about disposal.

9(7) Gas lighters

A review of various types and models.

11(9) Constant volume dispenser

Improvements suggested to our design in Bulletin 73.

12(10) Trade News

13(11) Bulletin Supplement – gas lighters

Details of the tests referenced in the earlier article.

14(12) Address List

Bulletin 75 Complete

The page numbers refer to the pages in the pdf. (The numbers in brackets are those given in the actual bulletin)

3(1) Introduction

Contributions to SSSERC bulletins, Holiday closing dates.

4(2) Opinion

Flameproof cabinets

6(4) Stethograph and tambour

A modification of the traditional stethograph and. tambour in which the mechanical  lever and pen method of producing a record has been replaced by an electrical arrangement.

10(8) Demonstration pH meter

We have made a small modification to the Philip Harris pH meter B51 60/1 , to allow it to be used for demonstration work with a large-scale milliamrneter, or with a chart recorder.

12(10) Thermometer life-savers

A simple device to prevent thermometers rolling off the bench and breaking by making small plastic tabs which fit over the thermometer. The tabs are cut from plastic detergent bottles.

12(10) Formers for low resistors

Simple method for making low value resistors.

13(11) Lever apparatus

More stable apparatus for investigating the simple lever law.

14(12) Address List