Why am I passionate about this?

Trained as a physicist and employed for twenty years as an engineer, my great interest in the application of science then led me to write. I authored technical papers on the physics underpinning venerable machines such as pendulum clocks and waterwheels; these were read by the chief editor at Johns Hopkins University Press, who invited me to turn them into a popular science book–the first of fourteen. Often, technological advances were made empirically–the development of sailing ships, bridges, or pocket watches–by working people with no formal knowledge of science, yet their designs survive as triumphs of human thought, as well as useful machines.


I wrote

Their Arrows Will Darken the Sun: The Evolution and Science of Ballistics

By Mark Denny,

Book cover of Their Arrows Will Darken the Sun: The Evolution and Science of Ballistics

What is my book about?

This book is a technical history of ballistics, from javelins to ICBMs. It explains the science behind slings and catapults,…

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The books I picked & why

Book cover of A History of the Sciences

Mark Denny Why did I love this book?

My first go-to book when I want an intro to some aspect of science history. I learn something new (ok–something old) every time I open this book.

Published sixty years ago and surely out of print–but a classic. Covers all the sciences from the dawn of history. Surprisingly readable and SO comprehensive. (Except for the last 60 years. But you knew that.)

By Stephen F. Mason,

Why should I read it?

1 author picked A History of the Sciences as one of their favorite books, and they share why you should read it.

What is this book about?

The evolution of scientific inquiry and ideas since the time of the ancient Babylonians and the influence of modern cultural and technological convictions and expectations on contemporary research are examined


Book cover of The Lunar Men: The Inventors of the Modern World 1730-1810

Mark Denny Why did I love this book?

I love this book for its affection for its characters and the colorful details of the world in which they lived.

It is a coruscating read about five curious men (curious in both senses) in eighteenth-century England at the dawn of the first industrial revolution–a revolution that they helped to create. 

By Jenny Uglow,

Why should I read it?

1 author picked The Lunar Men as one of their favorite books, and they share why you should read it.

What is this book about?

Led by Erasmus Darwin, the Lunar Society of Birmingham was formed from a group of amateur experimenters, tradesmen and artisans who met and made friends in the Midlands in the 1760s. Most came from humble families, all lived far from the centre of things, but they were young and their optimism was boundless: together they would change the world. Among them were the ambitious toy-maker Matthew Boulton and his partner James Watt, of steam-engine fame; the potter Josiah Wedgwood; the larger-than-life Erasmus Darwin, physician, poet, inventor and theorist of evolution (a forerunner of his grandson Charles Darwin). Later came Joseph…


Book cover of Weapons and Warfare in Renaissance Europe: Gunpowder, Technology, and Tactics

Mark Denny Why did I love this book?

This book is unique, to my mind, in topic and style. How is it possible to write engagingly about such a niche subject? Gunpowder was invented in China, but it was in Renaissance Europe that it became adapted to warfare (to say the very least).

This book covers a neglected aspect of technological history in an age otherwise much written about and covers it readably.

By Bert S. Hall,

Why should I read it?

2 authors picked Weapons and Warfare in Renaissance Europe as one of their favorite books, and they share why you should read it.

What is this book about?

Weapons and Warfare in Renaissance Europe explores the history of gunpowder in Europe from the thirteenth century, when it was first imported from China, to the sixteenth century, as firearms became central to the conduct of war. Bridging the fields of military history and the history of technology -- and challenging past assumptions about Europe's "gunpowder revolution" -- Hall discovers a complex and fascinating story. Military inventors faced a host of challenges, he finds, from Europe's lack of naturally occurring saltpeter -- one of gunpowder's major components -- to the limitations of smooth-bore firearms. Manufacturing cheap, reliable gunpowder proved a…


Book cover of The First Industrial Revolution

Mark Denny Why did I love this book?

Knowledgeable academic experts often write technical tomes that are as dry as their subjects, But Deane's historical exposition of Britain's Industrial Revolution is fascinating, full of insights, and well-written.

Why Britain first? The answers intrigue and engage. Why did other countries (the United States and Germany) outstrip the British from the mid-nineteenth century?

By P. M. Deane,

Why should I read it?

1 author picked The First Industrial Revolution as one of their favorite books, and they share why you should read it.

What is this book about?

This book identifies the strategic changes in economic organisation, industrial structure and technological progress associated with the industrial revolution, which took place in Britain over the century 1750-1850 and which marked a watershed in world economic development - the beginnings of modern economic growth for developed countries and an example of spontaneous industrialisation for third world countries. The book assesses both starting point and achievement, analyses the substance of economic transformation and evaluates the role of government policy and institutional change in retarding or accelerating economic development. The second edition updates and expands the first by taking into account (and…


Book cover of Darwin: The Life of a Tormented Evolutionist

Mark Denny Why did I love this book?

Put plainly, this biography of a key figure in the history of science is so beautifully written. Of course, it is knowledgeable and full of historical details, yet so enjoyable to read that I felt sorry it ended after a mere 800 pages.

The characters–eccentrics, heroes, villains–are many and various and expertly placed in their historical perspective. The authors' enthusiasm for their odd, unorthodox, and brilliant subject is very clear, as is their writing.

By Adrian Desmond, James A. Moore,

Why should I read it?

2 authors picked Darwin as one of their favorite books, and they share why you should read it.

What is this book about?

A biography of the naturalist disputes misconceptions, including Darwin's status as a true scientist, discussing how Darwin concealed his theory of evolution for twenty years, agonizing over its implications and the impact it would have on his social standing.


Explore my book 😀

Their Arrows Will Darken the Sun: The Evolution and Science of Ballistics

By Mark Denny,

Book cover of Their Arrows Will Darken the Sun: The Evolution and Science of Ballistics

What is my book about?

This book is a technical history of ballistics, from javelins to ICBMs. It explains the science behind slings and catapults, bows and arrows, rifles, and artillery. It is heavy on history and has technical notes for readers who crave the details.

Why must an arrow be flexible to fly straight at its target? Why are longbows more efficient than guns? Why were medieval catapults better than those of the ancient Greeks and Romans? Why does spin stabilize a bullet? Why do artillery shells drift when there is no wind?   

Book cover of A History of the Sciences
Book cover of The Lunar Men: The Inventors of the Modern World 1730-1810
Book cover of Weapons and Warfare in Renaissance Europe: Gunpowder, Technology, and Tactics

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No Average Day: The 24 Hours of October 24, 1944

By Rona Simmons,

Book cover of No Average Day: The 24 Hours of October 24, 1944

Rona Simmons Author Of No Average Day: The 24 Hours of October 24, 1944

New book alert!

Why am I passionate about this?

I come by my interest in history and the years before, during, and after the Second World War honestly. For one thing, both my father and my father-in-law served as pilots in the war, my father a P-38 pilot in North Africa and my father-in-law a B-17 bomber pilot in England. Their histories connect me with a period I think we can still almost reach with our fingertips and one that has had a momentous impact on our lives today. I have taken that interest and passion to discover and write true life stories of the war—focusing on the untold and unheard stories often of the “Average Joe.”

Rona's book list on World War II featuring the average Joe

What is my book about?

October 24, 1944, is not a day of national remembrance. Yet, more Americans serving in World War II perished on that day than on any other single day of the war.

The narrative of No Average Day proceeds hour by hour and incident by incident while focusing its attention on ordinary individuals—clerks, radio operators, cooks, sailors, machinist mates, riflemen, and pilots and their air crews. All were men who chose to serve their country and soon found themselves in a terrifying and otherworldly place.

No Average Day reveals the vastness of the war as it reaches past the beaches in…

No Average Day: The 24 Hours of October 24, 1944

By Rona Simmons,

What is this book about?

October 24, 1944, is not a day of national remembrance. Yet, more Americans serving in World War II perished on that day than on December 7, 1941, when the Japanese attacked Pearl Harbor, or on June 6, 1944, when the Allies stormed the beaches of Normandy, or on any other single day of the war. In its telling of the events of October 24, No Average Day proceeds hour by hour and incident by incident. The book begins with Army Private First-Class Paul Miller's pre-dawn demise in the Sendai #6B Japanese prisoner of war camp. It concludes with the death…


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Charles Darwin 57 books