June 27, 2026 05:25 pm (IST)
Follow us:
facebook-white sharing button
twitter-white sharing button
instagram-white sharing button
youtube-white sharing button
Fresh paper leak rocks India: Maharashtra TET postponed a day before exam, over 4 lakh aspirants affected | Pune fort murder case: Siya Goyal's brother says family would have called off marriage if she had objected | Donald Trump gets a road named after him in India, says 'Thank You!' | Fresh setback for Gautam Adani? US judge asks DoJ to justify dropping criminal charges | Ram Mandir Trust chief Champat Rai resigns as alleged donation siphoning row escalates | Ram Mandir fund row deepens: 8 arrested days after BJP called allegations 'false narrative' | 'Who tied the hands of CBI?': Calcutta HC on RG Kar case; victim's mother, now BJP MLA, says she is 'deeply disturbed' | Construction comes to a standstill at nearly 700 Kolkata projects after Taratala warehouse tragedy kills 15 | World Cup shocker! Ecuador stun Germany 2-1, storm into Round of 32 | Iran-US conflict: Cargo vessel hit near Strait of Hormuz, UN agency pauses evacuation operations

Google pays homage to Ferdinand Monoyer on his birth anniversary

| | May 09, 2017, at 03:31 pm
Mountain View, May 9 (IBNS): Google on Tuesday paid homage to French ophthalmologist Ferdinand Monoyer with a doodle, on the latter's 181st birth anniversary.

Monoyer is known for the introduction of dioptre, which is a unit of measurement of the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal length measured in metres (that is, 1/metres).

He is also credited with the invention of Monoyer chart, used to test visual acuity.

The doodle features animated eyes and the acuity chart.


image: Google

#FerdinandMonoyer #Ophthalmologist #GoogleDoodle #Dioptre #MonoyerChart #AcuityChart

Support Our Journalism

We cannot do without you.. your contribution supports unbiased journalism

IBNS is not driven by any ism- not wokeism, not racism, not skewed secularism, not hyper right-wing or left liberal ideals, nor by any hardline religious beliefs or hyper nationalism. We want to serve you good old objective news, as they are. We do not judge or preach. We let people decide for themselves. We only try to present factual and well-sourced news.

Support objective journalism for a small contribution.
Related Images
In Images: Kolkata Celebrates Jagadhatri Puja
In Images: Kolkata Celebrates Jagadhatri Puja Oct 31, 2025, at 12:43 am
Darjipara Mitra Bari Gears Up for Its Centuries-Old Jagadhatri Puja in Kolkata
Darjipara Mitra Bari Gears Up for Its Centuries-Old Jagadhatri Puja in Kolkata Oct 30, 2025, at 01:16 am
In Images: Devotees in Kolkata bid farewell to Goddess Durga with sindoor khela and immersion on Vijayadashami
In Images: Devotees in Kolkata bid farewell to Goddess Durga with sindoor khela and immersion on Vijayadashami Oct 03, 2025, at 12:19 am
Related Videos
Moments from the cherished life of fashion designer Rohit Bal who is no more Nov 04, 2024, at 05:17 pm
Milan Fashion Week: Models walk for designer Cormio show Feb 25, 2023, at 07:49 pm
Lakme Fashion Week 2022 Oct 29, 2022, at 11:48 pm