May 17, 2026 09:47 am (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
Inside Kolkata’s first rooftop Starbucks Reserve: Rare coffee, skyline views and a luxury café experience unlike any other
Sat, May 16 2026
Causes of Hair Fall in Women and How to Treat It
Wed, May 13 2026
British Deputy High Commission Kolkata, KCC, IBSA announce World Environment Day 2026 photography contest
Fri, May 08 2026
Threads that travel: How ‘Vishwa Sutra’ is turning India’s looms into global fashion stories
Sun, Apr 19 2026
Jagannath comes to Kolkata: Up to 10 lakh devotees expected at Vishwashanti Mahayagya from April 17
Mon, Apr 13 2026