Bulletin 11 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, New general science course

4(2) Opinion

Servicing of apparatus – “We need local science centres in every Education Authority”.

5(3)  “Pearls in air” experiment –

What we feel is an easier method, using standard equipment has been notified to us.

5(3) Note on the supply of radioactive sources

A change in some specifications.

5(3) Erratum

Hysteresis loop correction to Bulletin 8.

6(4) Surplus components available

6(4) The Constant-Load Balance

The fore-runner of the constant-load, single-pan balance was the equal arm beam balance, still to be found in many chemistry laboratories.

10(8) Display Laboratory

Latest additions

12(10) Trade News

Supplement – Balances Summary

14(12) Address List

Bulletin 12 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

Availability of CLEAPSE reports, Development Committee meeting, Closing dates

3(1) Eudiometer tubes

An alternative to the now banned induction coil method.

4(2) Conductivity experiments

An error in the article in Bulletin 10

4(2) Soldering of carbon electrodes

A useful tip to make this easier.

4(2) Trade News

6(4) Copies of strobe photographs

A simple method of making copies of polaroid images.

7(5) In The Workshop – K.E. experiments with trolleys

A unit using dynamics trolleys to verify that P.d = 1/2mv2 and designed in Falkirk High School has been assembled and tested by us.

9(7) In The Workshop – A blanking – photo-electrical control unit

The photo-electric control used. with the trolley frame described above was made up in the Centres and offers a cheaper alternative than the commercial version.

10(8) In The Workshop – Auxanometer

An  improved form of auxanometer which does not require a smoked drum, but records on ordinary paper and will give a carbon copy if needed, has been designed in the Centre.

14(12) Address List

Bulletin 13 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, Apparatus lists

3(1) Opinion

State control needn’t limit private school innovation.

4(2) Oscillatory motion

Whether this can properly be classified as an oscillation we leave the teacher to decide; from energy considerations it would seem very analogous to the pendulum clock.

4(2) Circuit board. connectors

Alternative methods of connecting components on the Worcester circuit board.

5(3) Mains lead clip

To avoid trailing leads.

5(3) Projectile motion

A method of showing the independence of horizontal and vertical motions in free fall

5(3) 300V power supply

Making one using a standard valve filament transformer.

5(3) induction coil usage

The use of induction coils is now banned in schools.

6(4) Silicone greases

Silicone greases should not be used to lubricate stopcocks on burettes or other graduated glassware.

6(4) Reagent standards

A dubious example of ‘purity’.

6(4) Trade News

8(6) Display Laboratory

Items added recently.

8(6) In The Workshop – Burette filler

A suggestion for an automatic burette filler.

9(7) In The Workshop – forearm model

A modification to the traditional forearm movement model.

9(7) In The Workshop – semi-circular canals model

A simple model of the ear’s semi-circular canals.

10(8) In The Workshop –  perspex hot wire bender

A simple way to bend perspex sheeting.

12(10) Address List

Bulletin 14 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 Page

3(1) De-ionised water

CLEAPSE have carried out an interesting survey in the comparative costs of producing distilled and deionised water.

4(2) Radiographs

Taking radiographs using radioactive sources is a straightforward procedure

5(3) Registration of radioactive sources

The registration procedure required by the Scottish Education Department

5(3) Microscope Tests

Modifications to the procedures outlined in “Microscope Tests” in Bulletin 7

8(6) Display Laboratory

Additions to the laboratory.

9(7) Trade News

10(8) In The Workshop – monkey and gun experiment

A set up with which we have achieved consistent results.

13(11) Bulletin Supplement – Microscope summary

(A blank page)

14(12) Address List

Bulletin 15 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

Opening the columns to a supplier.

3(1) Opinion

Recruiting teachers.

4(2) E. L.T. Power Supplies

We embark on some tests.

6(4)  A.C. milliammeter

An alternetive imethod for measuring alternating currents when carrying out conductimetric titrations.

7(5) Exothermal reaction

An exothermic reaction which is safe for use by pupils themselves

8(6) Trade News

9(7) Amoeba culture

A method which we have found successful and which will provide a plentiful supply for months is outlined.

9(7) Damped oscillation

A suggestion for displaying a damped oscillation on the oscilloscope.

10(8) Aerocups

Dissolving in turpentine.

10(8) Display Laboratory

Latest additions

11(9) Bulletin Supplement – Power Supplies & Microscopes

(This page is blank)

12(10) Address List

Bulletin 16 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

Membership.

3(1) Opinion

Science Advisors, Comprehensives.

4(2) Water barometer

The construction of an accurate water barometer is an impossible task because the final instrument will be temperature dependent, due to the vapour pressure of the waters.

5(3) The velocity of light  

We give some indication to teachers of the possibilities in using a laser beam to determine the velocity of light.

7(5) Brownian motion

In common with many teachers we have thought it very desirable to be able to show the effect of temperature on molecular movement using a Brownian motion cell.

8(6) Trade News

8(6) Anodising aluminium

Anodising aluminium is perhaps as popular with the school’s technical department as it is with chemistry teachers.

9(7) In The Workshop – a gas generator

A pupil gas generator for hydrogen or carbon dioxide can be made from two plastic detergent bottles.

11(9) In The Workshop –  a binary adder/subtracter

The design for the binary adder/subtracter given below was copied from a model shown by the B.B.C. on their stand at the A.S.E. conference at Nottingham last year.

13(11) Bulletin Supplement – power supplies

We give below the second half of the summary on the reports on E.L.T. power supplies.

14(12) Address List

Bulletin 17 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

Look after your Bulletins, Distribution list, New telephone number.

3(1) Bottle labels

Simple labels made from detergent bottles.

5(2)  Electrode potentials

The complexity with which one measures electrode potentials is up to the individual teacher

7(4) Display Laboratory

The latest additions.

8(5) Trade News

9(6) In The Workshop – sunshine recorder

A sunshine recorder can be constructed using a water-filled, round-bottomed flask as a spherical lens.

10(7) In The Workshop – electrode potential cell

Apparatus that illustrates that there is no tension in an elastic band supporting an object when both are falling freely.

13(10) Address List

Bulletin 18 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

Lending apparatus, Holiday closures.

3(1) Opinion

4(2) Physics equipment loan

Brief descriptions of the pieces of physics apparatus which we are prepared to lend to schools for use in projects,

6(4) Diffusion troughs

Shallow troughs for demonstrating diffusion can be cut from detergent bottles.

6(4) Electrode potentials

Comments on our item in the last Bulletin.

6(4) Equipment loan

Description of the colorimeter.

7(5) Trade News

8(6) In The Workshop – diffusion and osmosis experiments

A convenient method of employing Visking tubing

9(7) In The Workshop –  transistor breadboard construction

We give details of an electronic breadboard. which can be used to assemble experimental circuits without soldering.

14(12) Address List