Bulletin 36 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

Surplus equipment, I.S.C. (Integrated Science Course) worksheets

4(2) Opinion

S.Y.S. chemicals and safety

5(3) pH meters

We were asked to test and report on pH Meters suitable for school use.

7(5) Ring main model

Following the publication of our ring main model in Bulletin 33, we had a noteshowing how this may be set up using standard equipment.

7(5) Physics equipment list errata

8(6) Surplus equipment available

8(6) Electron orbital model making

Background material for the model cutting jig described in the workshop section of this Bulletin .

9(7) In The Workshop – Electron orbital model jig

A simple way of making models showing electron orbitals.

12(10) In The Workshop – respiration experiment

How a comparison of inhaled and exhaled air can be made for a small organism using pupil apparatus which can be made up in pupil quantity.

13(11) Bulletin Supplement – pH meters

A summary of the tests carried out on a selection of pH meters

14(12) Address List

Bulletin 37 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

Development Committee changes, A.S.E. Annual Meeting, Future SSSERC exhibitions

3(1) Opinion

Dry ice use, ‘Inertia’ selling and buying.

5(3) North Sea gas

We recently asked the Scottish Gas Board for a statement on the position regarding the introduction of North Sea gas into Scotland and how this would affect schools.

5(3) Glassware rationalisation

A reduction in the sizes and types of glass apparatus should ease the storage problem in schools. We suggest a list that schools might have.

6(4) Gas sampling

A simple method of sampling the gas to decide if the collecting vessel is full.

6(4) Gouy experiment

Investigating paramagnetism without interfering with the balance.

7(5) Use of lasers

Becoming available. An upcoming code of practice.

8(6) Trade News

9(7) In The Workshop – ticker timer

A design for making your own ticker timer.

10(8) In The Workshop –  longitudinal waves

The model to show resonance in a spiral spring, constructed for display by an overhead projector.

12(10) Address List

Bulletin 38 Complete

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

3(1) Opinion

Transistor power supplies, Metrication problems

4(2) Coulomb inverse square law

Experiments on the Coulomb law of electrostatic force feature in the Certificate of Sixth Year Studies Physics course and Philip Harris have produced a modified beam balance for measuring the force in question.

7(5) Hazardous chemicals

The possible future publication of a manual on hazardous chemicals. As an interim measure we give details below of the type of hazard associated with the chemicals listed by us.

9(7) Aquarium aeration

Our struggles to find a motor that will run long enough on battery power to keep aquaria aerated over weekends.

9(7) Lung contamination experiment

We show how an experiment may be set up to bring home to pupils (and teachers?) the quantities of tarry contaminants entering the lungs during cigarette smoking.

10(8) Aquarium aerator

An aquarium aerator is described which uses the pressure of the water supply  to force air into the aquarium with or without a diffuser.

12(10) Trade News

13(11) Bulletin Supplement – E.H.T. power supplies

A summary of tests carried out on a further selection of E.H.T. power supplies

14(12) Address List

Bulletin 39 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

Appointment of biologist, Future exhibitions

3(1) Surplus equipment available

5(3) Inverse square law experiment

Comments and improvements on the Coulomb inverse square law experiment in our previous Bulletin.

5(3) Gas-liquid chromatography

Following complaints by several teachers that sixth form projects on gas-liquid chromatography using a katharorneter detector gave very poor, if any, results, we investigated the techniques involved.

12(10) Muscle contraction display

Apparatus  is described that allows muscular contraction, e.g. from a frog heart preparation to be displayed on a long persistence screen oscilloscope.

14(12) Address List

Bulletin 40 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

Surplus equipment, Bulletin reprints, Development Committee

3(1) Opinion

Hazardous chemicals and quantities to purchase.

5(3) Chemistry Notes

Hazardous chemicals – a proposal for a manual for schools : we ask for comments.

6(4) Laboratory accidents

Accidental ignition of diethyl ether.

6(4) Disposal of hazardous chemicals

Hearing that the Chemical Engineering Division of A.E,R.E., Harwell, had offered such a service, we contacted them and give below the reply we received.

7(5) Explosion hazard of ethers

The dangers of peroxide formation, especially from isopropyl ether.

8(6) Integrated Science Course

We look at some of the equipment suggested.

9(7) Display Laboratory

Latest additions

10(8) In the workshop – kinetic energy experiment

The piece of apparatus to be described is the simplest we have seen for demonstrating that the kinetic energy of a body is proportional to v2.

12(10) Address List

13(11) Bulletin Index, Nos. 30 – 39

Bulletin 41 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) Surplus equipment available

5(3) Chlorine – methane reaction

Details of the reaction between chlorine and methane initiated by ultra-violet light.

6(4) Collecting gases over water

Filling a test-tube with a gas sample when the gas is collected over water.

6(4) Polystyrene solvent

Replacement for benzene (Erratum: for toluol, read toluene)

6(4)  Test-tube holders

Dangers when heating wire type test-tube holders.

7(5) Trade News

8(6) Integrated Science Course

Worksheet folders: how schools are containing the worksheets

9(7) Photography

Supplies of cheap cameras for the ISC.

10(8) Between the eyes

We are currently testing stereomicroscopes, and require information on the eye separation distance to be found in pupils who will use these microscopes.

10(8) In The Workshop – chlorine – methane experiment

Details of the apparatus used for the reaction between methane and chlorine, discussed on p.3 of this Bulletin.

13(11) Bulletin Supplement – low voltage power supplies

A summary of tests carried out on low voltage power supplies.

14(12) Address List

Bulletin 42 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

Conversion to natural gas, Stereomicroscopes

4(2) Mounts for electrical components

A new and inexpensive type of mount for small electrical components.

4(2) Polaroid cameras

There is now no camera in the Polaroid range which is suitable for stroboscopic photography.

4(2) Natural gas burners

We decided that we should investigate the operation of whatever natural gas burners we could lay our hands on.

9(7) Specification for stereo microscopes

The minimum features necessary for satisfactory performance on both ‘O’ and ‘H’ grade syllabuses, of stereomicroscopes.

10(8) Test procedure for stereo microscopes

The way in which test reports on stereo microscopes will be set out

13(11) Integrated Science – Coddington lenses

Our search for true or imitation Coddington lenses.

14(12) Address List

Bulletin 43 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

Holiday closures

391) Opinion

Polaroid cameras and the Scottish market.

3(1) Laboratory accidents

Zinc-sulphur explosion, explosion on heating clay that is still damp, explosion when oxidising ethanol, explosion due to blocked tube, too small a cork in ammonia fountain experiment, phosgene generated by carbon tetrachloride fire extinguisher, explosion while reducing metal oxide in hydrogen.

5(3) Small quantity packs of hazardous chemicals

Griffin and George have acted quickly by packaging some chemicals in smaller quantities.

6(4) Electrolysis electrode

A simple design.

6(4) Mercury in floorboards

A useful tip for the treatment of non-recoverable mercury which is lodged in cracks between floorboards.

6(4) Chemicals list additions

The following chemicals are needed for teaching chemistry to ‘O’ level and were omitted from our list.

7(5) Mobile fume cupboard

The mobile fume cupboard described in the Workshop section of this Bulletin was originally designed by CLEAPSE for their own use, but has since been manufactured on a commercial scale.

7(5) Cameras for photography

Cameras mentioned in Bulletin 41 are all sold.

7(5) Bi-metallic strip sales

8(6) Surplus equipment available

10(8) In The Workshop – mobile fume cupboard

A design to make your own DIY fume cupboard.

13(11) Bulletin Supplement – microscope summary

A summary of tests carried out on microscopes.

14(12) Address List