Ask the Chatbot Games & Quizzes History & Society Science & Tech Biographies Animals & Nature Geography & Travel Arts & Culture ProCon Money Videos
Jonas Chickering
Directory
References
Discover
Nativity Scene, Adoration of the Magi, Church of the Birth of the Virgin Mary, Montenegro
Why Is Christmas in December?
Panama Canal infographic
Timeline and Map of the Panama Canal
Indian hijras participate in a religious procession in Gandhinagar, India, some 30 kilometers from Ahmedabad, on March 22, 2017. Hijra is a term used in South Asia which refers to transgender individuals who are born male. (gender identity, gender expression)
6 Cultures That Recognize More than Two Genders
Monitor. Varanus salvadorii is a monitor lizard found in New Guinea can grows to 2.7 metres (9 ft.) aka Tree crocodile, Crocodile monitor, Salvadori's monitor, artellia, reptile
7 of the World’s Most Dangerous Lizards and Turtles
Srinivasa Ramanujan, Indian mathematician and autodidact.
6 Interesting Facts about Srinivasa Ramanujan
The impeachment trial of Pres. Andrew Johnson, illustration from Frank Leslie's Illustrated Newspaper, March 28, 1868.
What If the President Is Impeached?
Facsimile of one of William Henry Ireland's forgeries, a primitive self-portrait of William Shakespeare(tinted engraving). Published for Samuel Ireland, Norfolk Street, Strand, December 1, 1795. (W.H. Ireland, forgery)
The Time a Law Clerk Successfully Forged a New Shakespeare Play to Impress His Dad

Jonas Chickering

American craftsman

Learn about this topic in these articles:

role in development of piano

  • Moog synthesizer
    In keyboard instrument: Bracing and frame

    …and in 1843 another Bostonian, Jonas Chickering, patented a one-piece frame for grands. With the adoption of such frames, the tension exerted by each string (about 24 pounds [11 kilograms] for an English piano of 1800) rose to an average of approximately 170 pounds (77 kilograms) in modern instruments, the…

    Read More