Martha Coston #WHM23 #WomensHistoryMonth #WomenInSTEM

Today we celebrate Martha Coston, who at 21 years old developed and championed a system of pyrotechnic maritime signal flares that helped the North win the Civil War.

In her autobiography A Signal Success, she wrote:

At last I came upon a large envelope containing papers and a skillfully drawn plan of signals to be used at sea, at night for the same purpose of communication that flags are used by day. This chart was colored and showed that to each signal was attached a number and letter, explanatory of the particular colored fire used. My course lay clear before me. I saw the immense value of the invention.

My old friends in Washington were greatly interested in my efforts to make known my husband’s invention, and insisted on entertaining me in their homes until further steps could be taken.

Just at this time of suspense and anxiety my second child, a beautiful boy, strikingly like his father and named after him, was taken ill, and after a long and painful illness expired.

It would consume too much space for me to go into all the particulars of my efforts to perfect my husband’s idea. The men I employed and dismissed, the experiments I made myself, the frauds that were practiced upon me, almost disheartened me.

I had finally succeeded in getting a pure white and a vivid red light, but a third color was essential. Blue I had set my heart on, in order to use the national colors, but I could not obtain it of equal intensity and strength with the other colors, and, considering the long distances at which these signals needed to be seen, this was a primary consideration.

As the months rolled on I grew desperate. I had eked out my little means as well as I could and now I stood face to face with penury. My children, lovely and good, were growing fast, and had other needs than those of clothes and food, and my determination to succeed grew with the obstacles that arose.

At this time the whole country was in a ferment over the successful laying of the Atlantic cable, and tremendous was the excitement on the day when the first cable dispatch flashed under the sea from Queen Victoria to President Buchanan.

Cyrus W. Field received a great ovation in New York City, and at night there was a grand display of fireworks, which took place from the City Hall. Fiery portraits of the Queen and the President, wreaths, rockets, Roman candles, banners, eagles, wheels, showers of colored stars, and finally ships of fire were represented paying out cables of highly-tinted lights.

This display suggested to me that among the New York pyrotechnists I might find some one capable of helping me. I opened communications with several of them, under a man’s name, fearing they would not give heed to a woman, asking for a strong, clear blue or green light, but not saying for what purpose I wished to make use of it.

One man in an intelligent reply said he had several years before invented a pure blue, but threw it on one side on account of its being too expensive for ordinary use. I replied urging him to recover the color if possible; if not, to try green.

In ten days, I received a package at my country house near Philadelphia, containing the desired colors, and I persuaded a friend to drive to a mountain some five miles distant, and burn them to show me the color. The trial was a success; the green fire brilliant and intense. I at once entered into negotiations with the pyrotechnist, and having received satisfactory references took him into my confidence, and engaged him to make further experiments.

Learn more!

Adafruit publishes a wide range of writing and video content, including interviews and reporting on the maker market and the wider technology world. Our standards page is intended as a guide to best practices that Adafruit uses, as well as an outline of the ethical standards Adafruit aspires to. While Adafruit is not an independent journalistic institution, Adafruit strives to be a fair, informative, and positive voice within the community – check it out here:

Join Adafruit on Mastodon

Adafruit is on Mastodon, join in!

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Join over 36,000+ makers on Adafruit’s Discord channels and be part of the community!

CircuitPython – The easiest way to program microcontrollers –

Maker Business — Making sure the CHIPS act isn’t just crumbs

Wearables — And now a word on laser ettiquette

Electronics — Capacitor ESR

Python for Microcontrollers — Python on Microcontrollers Newsletter: CircuitPython 8.1.0 and 8.2.0-beta0 out and so much more! #CircuitPython #Python #micropython @ThePSF @Raspberry_Pi

Adafruit IoT Monthly — Guardian Robot, Weather-wise Umbrella Stand, and more!

Microsoft MakeCode — MakeCode Thank You!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — JP’s Product Pick of the Week 5/30/23 USB Host Feather RP2040 @adafruit @johnedgarpark #adafruit #newproductpick

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at !

No Comments

No comments yet.

Sorry, the comment form is closed at this time.