Bulletin 86 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

Mr. Hugh Medine retires

3(1) Opinion

Acronym competition, no biology in the bulletin?

4(2) Vibrating spatula

An even simpler yet effective design.

4(2) Integrating photometer experiment

Light falling on the cell causes deposition of copper on the cathode, which can be weighed periodically.

5(3) Microprojection using the o.h.p.

How to project a microscope image using an Overhead Projector.

6(4) Puzzle box

A simple design for an intriguing object.

7(5) A timer and frequency meter, part 1

It is not a difficult matter to construct a millisecond timer which will register transit times of moving vehicles.

11(9) Trade News

11(9) In The Workshop – circuit board

Much of the work in current electricity in Section 7 of the  Integrated Science course can be carried out with this circuit board.

14(12) Address List

Bulletin 87 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

Scottish branch A.S.E. annual meeting, FE. help with CSYS projects, Easter closing dates

3(1) Opinion

Capital equipment costs 1.

4(2) Timer and frequency meter, part 2

This continues the article on the timer and frequency meter, the first part of which appeared in Bulletin 86.

9(7) Gram formula mass determination

The gram formula mass of an unknown volatile substance is found by comparing the masses of equal volumes of the unknown and a known substance when both are vaporised and at the same temperature and pressure.

10(8) Trade News

11(9) In the Workshop – Syringe oven

A syringe oven for use in gram formula mass determination as described above.

13(11) ‘O’ grade microscopes

Bulletin Supplement of test reports available.

14(12) Address List

Bulletin 88 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

Bulletin distribution arrangements, Surplus equipment distribution, Assistant director of chemistry appointed (Allen Cochrane).

4(2) Electronic calculators

We have embarked for a second time on the task of assessing electronic calculators

6(4) Surplus chemicals

Griffin and George have given to us for disposal a large number of chemicals.

7(5) Asbestos hazard

Following on a television programme we have had a number of queries from teachers, obviously prompted by parent and pupil concern, on the risks associated with handling asbestos. We state the position as informatively as we can.

8(6) Equipotential lines experiment

Regarding the experiment to show equipotential surfaces – a suggestion is to use alternating rather than direct current is examined.

9(7) EMF by potentiometer

Can it be effectively and accurately measured?

10(8) In the Workshop – centrifugal pump

A centrifugal liquid pump in which the rotor is a permanent magnet, driven by a standard magnet stirrer is described.

11(9) Microprojection with an OHP

We describe a wooden stand carrying a back-projection viewing screen which allows the teacher to micro-project a slide to a group of 4-5 pupils so that significant features may be pointed out.

14(12) Address List

Bulletin 89 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 

Biology equipment list, Surplus chemicals, Cost index

4(2) Opinion

Microbiology hazards

6(4) Aquarium heaters

It is now illegal to sell the glass envelope type of aquarium heater.

6(4) Drosophila feeding

Disposable feeding bottles are ideal for Drosophila culture.

6(4) Measurement of sodium D line wavelength

A very simple method of determining the wavelength,

7(5) Steam engine hazard

In October last year, the BBC Nationwide programme featured a series of accidents involving the Mamod model steam engine,

8(6) Surplus physics equipment

11(9) Trade News

13(11) In the Workshop — measured volume dispenser

This dispenser not only allows liquids to be dispensed into test tubes, flasks or beakers without spillage, but will deliver the selected volume accurate to within 0.1 ml.

14(12) Address List

Bulletin 90 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 

Chemistry equipment list, Session 1976/77 programme, Footnote

4(2) Opinion

Telephone troubles

5(3) Microbiology again

It was interesting to note that the disquiet felt by a non-biologist (Opinion, Bulletin 89) about practical microbiology in schools, is shared by a professional microbiologist working in the Public Health Laboratory at Dulwich Hospital.

7(5) Vacuum filtration

Using a syringe pump instead of a standard water-powered device.

7(5) Sodium absorption effect

How to demonstrate an absorption spectrum.

8(6) Photo-transistor alternative

A cheaper alternative to the commonly used device.

9(7) Average and rms values of alternating current

An OHP demonstration of average and RMS va1ues of alternating current.

9(7) Variable focus lens

Make a varifocal lens from a transparent plastic bottle whose sides can be squeezed to increase or reduce their curvature.

10(8) Trade News

12(10) Address List

13(11) Bulletin Index Nos 80 – 89

Bulletin 91 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

Distribution of surplus equipment,  Free chemicals, FE. help with CSYS projects

4(2) Nickel cadmium cells

Notes on the care of nickel cadmium cells.

5(3) Surplus physics equipment

10(8) Asbestos hazard – again

Since we published a note in Bulletin 88 on hazards due to asbestos in the science laboratory there has been considerable activity both within and without educational circles. Further advice.

12(10) In the Workshop – Microscope illuminator

How to make a simple, DIY microscope illuminator.

13(11) Monohybrid cross model

A simple model to help pupils understand a simple monohybrid genetic cross

14(12) Address List

Bulletin 92 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

Chemistry project competition, FE, help with C.S.Y.S. projects,  Surplus equitment

3(1) Opinion

Flameproof cabinets

4(2) Fire test on a flameproof cabinet

Results of testing our wooden flameproof cabinet.

7(5) Bis-CME hazard

Warning of danger from Griffin and George in one of their own booklets.

7(5) S concert pitch generator

How to divide down a 1 MHz crystal controlled frequency, to generate the concert pitch A 440 Hz with an accuracy better than 0.05%.

11(9) Surplus physics equipment

12(10) Trade News

13(11) Bulletin Supplement — stereornicroscopes

Test reports available on stereomicroscopes

14(12) Address List

Bulletin 93 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 experimental guide to mechanics, Subscription reminder, Cost index, Christmas and New Year closing dates

3(1) Opinion

The use of goggles in chemistry

5(3) Hydrogen electrode

The cost and difficulty in use often discourages teachers from using a hydrogen electrode. We show a cheaper easier way to do it.

7(5) Mendel’s second law

Following on from Bulletin 91, dealing with the independent assortment of characters in a dihybrid cross, is a little more difficult to simulate but we have a solution.

9(7) In The Workshop – Mendel’s second law

A flashing light model used in the activity described above.

13(11) Trade News

14(12) Address List