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\(power \ of \ a \ lens \ (D) = \frac{1}{focal \ length \ (m)}\) A lens has a power of -3.33 dioptres. Calculate the focal length and state what type of lens it is.

Albert Einstein, in 1905, presented the revolutionary idea of light quanta of energy which equals ħw, where ħ is reduced Planck's constant. There is plenty of experimental evidence on magnetic ...

The camera uses an L-mount lens system, allowing compatibility with lenses of different focal lengths, just like most full-frame cameras. With a full-metal unibody design, the Sigma BF is available in ...

Sony unveils FE 400-800mm F6.3-8 G OSS and FE 16mm F1.8 G lenses The 400-800mm lens is Sony's first-ever with 800mm reach The full-frame lenses cost $2,900 / £2,550 and $800 / £850 respectively ...

I recently had cataract operations (both eyes) at a private clinic. I was told there were different lenses available, including a lens that OHIP would pay for. I had astigmatism which the OHIP ...

Get Instant Summarized Text (Gist) A new microscopy technique, nuclear spin microscopy, utilizes quantum sensors to convert nuclear magnetic resonance signals into optical signals, achieving ...

High-end German optics company Zeiss is back in the photo game. On Tuesday, February 25, Zeiss unveiled the new Otus ML lens family, a move that brings the company’s earlier f/1.4 primes to mirrorless ...

If you often have to jot down notes and worry about misplacing or missing information, Microsoft Office Lens is here to help. To conclude, Office Lens by Microsoft is ...

Leica has announced an updated version of one of its iconic lenses, expanding the Leica Classic Line in the process. The Summilux-M 50mm F1.4 (I) was launched in 1959 as the first offering under the ...

In Chrome, tap the three-dot icon, swipe to the bottom of the screen, and select "Search screen with Google Lens." In the Google app, tap the three-dot icon to the right of the address bar and ...

Instead of manually copying and pasting text or performing a separate search, Google Lens enables you to highlight, draw over, or tap on any part of your screen to initiate a search instantly.