Pierre Jules Cesar Janssen

Managing Real Estate Broker with Fathom Realty PB00068179

Pierre Jules César Janssen was born in Paris, France back in 1824 to Antoine and Pauline.  He studied mathematics and physics, at the University of Paris.  After graduation, he taught at Lycée Charlemagne.  His interests were in astronomy, so he devoted most of his life to observation of solar eclipses.

He travelled to several locations to observe eclipses.  He was in Paris in 1870 during the Siege of Paris, he escaped in a balloon.  He died in Meudon, France in 1907, he was 83.

What you may not know about Pierre is that he was noted for inventing the Revolver of Janssen which was the precursor of the motion picture industry.  He is also noted for discovering helium.

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URL http://www.sellnwa.com 

Comments (22)

Donald Urschalitz
Lubeck Realty Group - Jupiter, FL
P.A. Realtor ABR RSPS North Palm Beach County

It sure was good that he identified this since I am sure many thought it was going to be the end of the earth.

Nov 30, 2020 04:44 AM
Nina Hollander, Broker
Coldwell Banker Realty - Charlotte, NC
Your Greater Charlotte Realtor

Good morning, James... this was certainly a well-rounded man in terms of his interests and contributions.

Nov 30, 2020 04:46 AM
Wayne Martin
Wayne M Martin - Chicago, IL
Real Estate Broker - Retired

Good morning James. And before today I had no clue about this man named Pierre. Enjoy your day! 

Nov 30, 2020 04:54 AM
Brian England
Vacasa - Gilbert, AZ
MBA, GRI, REALTOR® Real Estate in East Valley AZ

Those are two pretty good inventions for sure!  I have always had an interest in astronomy but I have never studied it.

Nov 30, 2020 05:15 AM
Bob "RealMan" Timm
Ward County Notary Services - Minot, ND
Owner of Ward Co. Notary Services, retired Realtor

It sounds like he lived a very exciting life James Dray . I am wondering how one discovers helium?

Nov 30, 2020 05:48 AM
faye schubert
Branson, MO
Living the Branson Lake Life

What a variety of interests and curiosity. Love eclipses!

Nov 30, 2020 06:04 AM
Roy Kelley
Realty Group Referrals - Gaithersburg, MD

Thank you very much, James, for sharing this story.

Take care and be safe.

Nov 30, 2020 06:13 AM
Michael Jacobs
Pasadena, CA
Los Angeles Pasadena 818.516.4393

Hello James - a thinker and a tinkerer.  Quite the story.  

Nov 30, 2020 06:27 AM
Nick Vandekar, 610-203-4543
Long & Foster Real Estate Inc 610-225-7400 - Devon, PA
Tredyffrin Easttown Realtor, Philly Main Line

I am guessing that helium came in handy when he wanted to escape Paris. Obviously a thoughtful man who didn't think aimlessly.

Nov 30, 2020 07:41 AM
Rocky Dickerson
Realty One Group - Las Vegas, NV
Superior Service!

Good morning James Dray I wonder how in the world, one would discover helium

Nov 30, 2020 08:21 AM
Jeffrey DiMuria 321.223.6253 Waves Realty
Waves Realty - Melbourne, FL
Florida Space Coast Homes

Wow James, quite an interesting man who lived a very long time (for the early 1900s).

Nov 30, 2020 08:24 AM
Sheri Sperry - MCNE®
Coldwell Banker Realty - Sedona, AZ
(928) 274-7355 ~ YOUR Solutions REALTOR®

Hi James Dray - Astronomy was a huge impetus for moving to Sedona.  There is something mystical when looking up at the Milky Way. 

Nov 30, 2020 08:54 AM
Ron and Alexandra Seigel
Napa Consultants - Carpinteria, CA
Luxury Real Estate Branding, Marketing & Strategy


What an interesting man, and I enjoyed reading about his inventions.  Wishing you a wonderful week ahead.  A

Nov 30, 2020 09:39 AM
Kathy Streib
Room Service Home Staging - Delray Beach, FL
Home Stager - Palm Beach County,FL -561-914-6224

Hi james- it would seem that this gentleman had a variety of interests. 

Nov 30, 2020 10:10 AM
Paul S. Henderson, REALTOR®, CRS
Fathom Realty Washington LLC - Tacoma, WA
South Puget Sound Washington Agent/Broker!

That is a wide spectrum of interest displayed by Mr Janssen. Thank you 😎

Nov 30, 2020 01:56 PM
Grant Schneider
Performance Development Strategies - Armonk, NY
Your Coach Helping You Create Successful Outcomes

Hi James Dray - he certainly had a very interesting life. That is an interesting contraption.

Nov 30, 2020 04:08 PM
Jeff Dowler, CRS
eXp Realty of California, Inc. - Carlsbad, CA
The Southern California Relocation Dude

Movies? Helium? What an interesting combination of discoveries! An intriguing read from start to finish!


Nov 30, 2020 08:03 PM
Endre Barath, Jr.
Berkshire Hathaway HomeServices - Beverly Hills, CA
Realtor - Los Angeles Home Sales 310.486.1002

Well I had no idea Helium? Everyone should know Pierre and be glad he invented it:))Endre

Nov 30, 2020 11:03 PM
Dorte Engel
RE/MAX Leading Edge - Bowie, MD
ABC - Annapolis, Bowie, Crofton & rest of Maryland

Dear James,

Looks like Pierre Jules Cesar led an interesting life. Nice to be able to follow so many passions.

Dec 29, 2020 07:20 AM
John Juarez
The Medford Real Estate Team - Fremont, CA

Pierre Jules Cesar Janssen was another genius who laid the foundation of knowledge for others to build upon.

Mar 13, 2021 09:11 AM

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