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Talks and Slide Lectures

John HarrisonI have many interests - I'm a photographer, hill-walker, engineer, ergonomist, author, bellringer and more. For many years I have shared my interests with clubs and groups  by giving talks on a wide range of topics.  

Historical & cultural

   

Travel & places

   

Window on the world

   

Special interest

        Future talks

 If you are not too far from Wokingham, and interested in a talk, then contact me.        See the sort of groups I have spoken to .


English Style Bells & Bellringing

BellringingEnglish style bellringing is part of our cultural heritage, and is a sound familiar to us all. It originated in England around 400 years ago and has spread to many parts of the world. Ringing requires skill, dedication and teamwork, from people who are normally invisible to their audience. This talk gives an insight into this hidden, but fascinating, world. I adapt the emphasis of the talk to suit the audience (more on history for historians, more on music for musicians, more on maths for mathematicians, and so on). I have been a ringer since my teens, and I have been actively involved in training ringers at local, regional and national level. I have published several books, including "Ringing Skills", and the most comprehensive reference work "The Tower Handbook". For eight years I wrote a monthly column "The Learning Curve" in "The Ringing World". I ring at All Saints Wokingham. See also my talk on the history of ringing in Wokingham[Back to top] 

In this talk for non ringers, I explain how English style ringing evolved, how bells work, and the music of change ringing, with glimpses into the world of ringers and the fascination that ringing can offer. I vary the talk to suit the needs of the groups I am talking to. It can be anything from a 20 minute after dinner talk to a full evening's illustrated presentation.   [Back to top] 
 

Living Heritage

Living HeritageThat is an apt description of the tradition of English-style bellringing, which began around 1600 and thrives today. It is also the title of my book on the history of ringing in Wokingham . Unlike my general talk on bellringing , this talk is a social history, looking at the lives and times of ringers in an English market town. The talk takes the same 300-year time-span as the book (the period since the oldest of the current bells were installed, in 1704). It looks at the 18th century when ringing was a public sport, at Victorian reform of both the church and ringers, and at the 20th century when the band evolved through the trials of two world wars, and into the modern era. Based on extensive research, it shows how the ringers related both to the community around them, and to the church whose bells they rang. The talk lifts the lid on the very special, fascinating, but largely hidden, world of the men and women who kept alive this ancient art in an English market town.   [Back to top] 

  The Settle-Carlisle Railway

Settle-Carlisle railwayThis is the story of England's most spectacular main line railway. Born out of inter company rivalry, the line is a superb example of Victorian engineering achievement, and was driven through the most hostile but beautiful terrain. In the 1980s British Rail's controversial attempts to close the line resulted in the largest public reaction to any rail closure proposal ever. The line now serves commuters as well providing an artery into the Dales for tourists. It is also a heavily used strategic freight route. The talk brings you glimpses of the line's past and recent history, gathered over many years. The talk looks at the line's spectacular viaducts and how they were built, and also at its magnificent surroundings, and the challenging terrain through which the Midland Railway forged a route for its prestige service from London to Scotland. (See also the famous Ribblehead Viaduct knitted in a sweater)    [Back to top] 

  Brickwork

BrickworkBrick-work is all around us - we take it for granted - but look more closely and you can see a wealth of fascinating detail. Through the centuries, brick-work has been influenced by changing needs, by improved technology and by passing fashions. In the talk, I show you how with simple observation of the brickwork, you can read the stories that are written in the buildings all around us. The talk is illustrated with slides, and I normally bring some samples from my collection of different types of brick – you'll be surprised how varied they are. [Back to top] 


  Iceland 

lIcelandIceland sits just below the Arctic Circle, and astride the mid Atlantic ridge, which divides European from North American at the boundary of their tectonic plates. The plates move apart at about an inch a year, which is why Iceland is very active in terms of volcanic erruptions, most of which never make the headlines. This unique situation gives it amazing geology, scenery, wildlife and culture. My wife and I first visited Iceland in 1991 and we have returned many times since. I will give you glimpses of this fascinating and very special country. (See also Iceland Links.)    [Back to top] 

  The Pennine Way

Pennine WayThe Pennine Way was one of the first long distance footpaths to be created in Britain. It is also the longest cross-country route (only the Southwest Coast Path is longer). The Way passes through some of the finest scenery in Northern England. I walked the route with my wife in 1970 and revisited the area later to complete a photographic essay. Much of the walk is on the hills, but it also crosses valley after valley giving fascinating tastes of the different communities through which the Way passes. (See also Pennine Way). [Back to top] 

  I'll Take the High Road

Fell walkingThis draws on a lifetime of hill walking with a camera to bring you a pictorial anthology of hills and mountains. As well as enjoying the superb upland scenery, you will see how geology and civilisation have influenced the landscape, and how a walker can make the best of the resulting terrain. (See also Fell walking)    [Back to top] 

 


More than Meets the Eye

IllusionHave you ever wondered why there is so much pattern in the world around us and why our brains invent it even if it isn't there? Have you ever wondered why illusions work? This talk will give you new insights into your perceptual senses with many examples of illusions and paradoxes. An engineering career, artistic hobbies and a lifelong scientific curiosity have gone into this fascinating talk spanning many disciplines.    [Back to top] 

  The Human Factor

ErgonomicsThe discipline of Ergonomics has come to prominence during the last half century, and plays an increasingly vital role in ensuring that our ever more complex and technological world is fit for humans to live and work in. In this short talk, I will give you some insights into the history and current practice of this fascinating subject that spans the divide between people and their environment, notably the technology on which they increasingly rely, and the divide between the so-called 'hard' and 'soft' sciences. To illustrate the problems, I will describe examples drawn from real life, from every day objects to major disasters.    [Back to top] 

  Footpaths (in preparation)

FootpathsFootpaths are as old as civilisation. They evolve to meet human needs, and most have an organic form that grows without any planning. This is especially so for upland footpaths, which provide vital arteries for walkers, and enable us to enjoy wild places, but in many areas they are becoming an endangered species. The paths came into being because of human use, and they move or disappear when human use changes. Some are very old, but as more of us take to the hills, many of them are suffering from over-use, and consequent degradation. Many of the pleasant grassy paths that I walked in the '60s and '70s turned into ugly rock-strewn scars on the hillside under the relentless pressure of millions of boots. Some of this damage is being repaired by bodies such as the National Trust and the National Parks, but it is a non-ending task. I have observed paths for many years in all sorts of terrain, in UK and abroad, seeing how they respond to both use and mis-use. This talk will be a pictorial essay showing the diversity, as well as the fragility, of a very 'natural', but at the same time man-made, upland phenomenon.    [Back to top] 

  An evolving garden

GardenMy garden and I have been together for over thirty years. The garden now bears little resemblance to what was there before – it has more diversity and year-round interest. Yet there were no grand schemes and no dramatic make-overs, just a slow evolution, motivated by an underlying desire to enrich it. Many changes were opportunistic, rather than premeditated. I try to work with the garden rather than fighting against it. This talk describes how the garden evolved, and why. It is illustrated with many pictures taken in different seasons over the years.    [Back to top] 
 


  Ringing for musicians

TittumsEnglish-style bellringing is a very special kind of music. It shares some features with minimalism, but it is based on quite different principles, and requires very different performance skills. This talk explains the intricacies of change ringing from a musical perspective. This talk was first given to a group of experienced musicians, as a result of which I was asked to write a series of articles .    [Back to top] 

  Ringing the Changes – The maths of bell ringing

Minimus shapeAll forms of music show some mathematical structure in scales, chords and rhythm. English-style change-ringing is a very special type of music. It has no chords and no variation in rhythm, but it is underpinned by some elegant and fascinating mathematics. The continually changing sequences that constitute the music use what mathematicians call permutative group theory, which also appears in areas as diverse as cryptography and the solutions to Rubik’s Cube. The principles of group theory were formalised in the 19th century, but ringers were using them 200 years earlier without being aware of it. This talk explains the mathematical principles behind change ringing. They flow from the physical constraints on a swinging bell, from the desire for patterns that can be executed from memory, and from the concept of ‘truth’, which is unique to change ringing. The talk concludes with an explanation of the models  that I built in 1968. This talk was first given to the Wokingham U3A Maths Group, You don't need a strong mathematical background to enjoy it.    [Back to top]  

Technology of bellringing (in preparation)

 Bell hung for full circle ringingEnglish style bell ringing requires bells hung in a special way, with the bells swinging full circle. While the physics of a swinging bell are simple, to create a precision musical instrument that responds sensitively to the needs of a performer presents considerable engineering challenges, when the instrument may weigh a ton or more, and is hung high in a tower, far from the performers.    [Back to top]


  Possible future talks

The talks above originated in response to particular requests. Several other potential talks are in my head, but I haven't got round to preparing them because no one has yet asked for them. So if one of the topics below catches your fancy, try asking me.    [Back to top] 

 Metal sculpture 

Metal sculptureFor several years while our children were young, I spent a significant part of my holidays doing metal sculpture, casting in bronze and aluminium, and welding in steel. I started with no prior experience, and managed to produce an interesting collection of objects that adorn our home. If you are curious to know about different types of artistic casting, and what is enigmatically known as 'found' sculpture, I will explain. You will also hear the experiences of a novice working under considerable time pressure, and of course you will see some of the results. (See also Metal sculpture)    [Back to top] 

 The Back Bone of England

PenninesThe Pennine hills contain some of Northern England's most beautiful scenery. Rugged moorland is crossed by a succession of valleys, each slightly different in character, and threaded with urban and rural settlements that portray much of the nation's industrial growth in recent centuries. I grew up on the edge of the Pennines and I have revisited them many times since. In an area larger than Wales, but perhaps less well known, there is much to tempt the photographer.    [Back to top] 
 


 If you are interested in any of these talks, and not too far from Wokingham, then contact me.  

Some of the groups I have spoken to  

Rose Street Transport Society, Wokingham Rotarians, Hart Rotarians, Wokingham U3A, Wokingham Activity Group, Bracknell Forest U3A, SE Berks National Trust, Farnborough U3A, Yateley U3A, The Marlow Society, Kennet Camera Club, Wokingham History Society, Winnersh History Group, Finchampstead Society & Heritage Group, Reading Association of Women Graduates, Bracknell Railway Society, Mid Hants Railway (Thames Valley Branch), National Women's Register, Slough & Windsor Railway Society, Wokingham Civil Service Retirement Fellowship, Surrey County Council Staff Retirement Association, Kingston Civil Service Retirement Federation, Berkshire Industrial Archaeology Group, Wokingham and District Health Walkers, Wokingham Older People’s Forum, Frimley Green Townswomens Guild, Mid Hants railway (Woking and Guildford group), Wokingham U3A Maths Group, Wokingham U3A Industrial Heritage Group, Park House School Newbury, Ladies 'After Eights'.


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