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Hi Dave and Cip thanks for even looking at the question :cheers:

I have written the question word for word that is in my assignment book, i think they want me to work out the center thickness,...

Can no one help me :cry:

Please can someone help i'm currently in my first year ABDO, i'm a bit stuck on a question ok here goes

What is the difference in the apparent thickness of a biconvex lens, made in glass of...

thanks for my welcome think i'm gonna need your help at some point are you from the us also:D
Nicola

Hi Harry, I'm Nicola from the uk, where are you from? Thank you for your help and advise it's greatly appreciated this is my first year. I'm training with ABDO (Association of Brittish Dispensing...

please can you help :hammer:

I'm currently stuck on a couple of questions :confused:

A -5.00D lenses is to be made in glass of refractive index 1.802, using tools calibrated for glass of...

That was a big help, made everything totally clear.
Many Thanks Lensgrinder.

I might get in touch again if you dont mind.:cheers:

Hi,
I am Nicola in the UK.
Stuck on a few questions.
Not looking to be spoon fed but some help would be great.
Here goes
A thin plus lens, made in glass of refractive index 1.50, has a focal...

Hi,
I am Nicola in the UK.
Stuck on a few questions.
Not looking to be spoon fed but some help would be great.
Here goes
A thin plus lens, made in glass of refractive index 1.50, has a focal...