Discover and read the best of Twitter Threads about #gustaveeiffel

Most recents (1)

Tick… Tick… Tick…
On this day, 155 years ago, the first #stockticker was unveiled. Here's a 🧵on the stock ticker, the device, invented by #EdwardACalahan, that helps stock markets to function efficiently.
#onthisday #inventions @InventorsHOF 1/n Image
Back in the day, brokers would get to know price movements through pageboys who would run to and fro between the #stockexchange and the offices of brokers. 2/n
Enter Calahan. A school dropout, he was employed as a telegraph operator with #WesternUnion and had a lot of tech-savvy. 3/n
Read 17 tweets

Related hashtags

Did Thread Reader help you today?

Support us! We are indie developers!


This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3.00/month or $30.00/year) and get exclusive features!

Become Premium

Too expensive? Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal Become our Patreon

Thank you for your support!