February 05, 2026 03:54 pm (IST)
Follow us:
Google pays homage to Ferdinand Monoyer on his birth anniversary
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
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.
Latest Headlines
Vintage automobiles steal the show at The Lake Club, Kolkata
Tue, Feb 03 2026
Heritage walk traces Medical College Kolkata’s 192-year journey of medicine, reform and nation-building
Mon, Feb 02 2026
Mahindra turns up style quotient with Thar ROXX STAR EDN—all-black, bold and award-winning
Sat, Jan 24 2026
No booze, no DJ, just bhajans: How Gen Z is redefining clubbing
Fri, Jan 23 2026
No booze, no DJ, just bhajans: How Gen Z is redefining clubbing
Fri, Jan 23 2026
Forget candlelight dinners—choremance is the new way to date
Sat, Jan 10 2026