19th Century
John Scott Russell
Imagine, if you will, that you have decided to go for a horse ride along a canal towpath. You see a canal barge making its way along the canal and in front of the barge [more…]
19th Century
19th Century
Every Picture Tells a Story
Puffins, Puffins, pay attention, please. Free time is over, so put away your things and we are going to have a nice story, so gather over here, make a circle on the floor all around [more…]
18th Century
Holding Hands – Part Three
The Road goes ever on and on Down from the door where it began. Now far ahead the Road has gone, And I must follow, if I can J.R.R. Tolkien, The Fellowship of the Ring. In [more…]
18th Century
Holding Hands – Part Two
In Part One, I explained that my husband and I travelled to Moelfre, not far from Oswestry, to see a sculptor by the name of Tony Meadows. During that visit, Tony had made an alginate [more…]
19th Century
Divided Nation
There are many similarities between family life and the life of the nation. Peace in the home tends to come through being united around common values and expectations. The presence of harmony within the walls [more…]
18th Century
Sophie Germain Primes and Cunningham Chains
A Sophie Germain prime is a prime number such that is also a prime number. That is, , where and are both prime. For example, . The sequence begins Sophie Germain () explored these primes [more…]
16th Century
The Troubled History of the Potato
The potato is a native of the high Andes, a low-growing plant (Solanum tuberosum) with pretty purple flowers and round black fruits. To survive in its harsh environment it has evolved the habit of growing [more…]
18th Century
How the 1st Duke of Wellington dealt with civil and other serpents
You asked for it, dear Puffins! So here it is: another piece on one of my favourite subjects, the 1st D of W – this time about how he dealt with civil and other serpents. [more…]
19th Century
Holography, Part Four
Holograph Examples The PFG-01 holographic film that I’ve used in the examples below is ideally suited to making transmission holograms but it can also be used to make reflection holograms. Reflection Holograms One of the [more…]