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2. Maddox rod - Wikipedia

   en.wikipedia.org/wiki/Maddox_rod

   The strength of the prism is increased until the streak of the light passes through the centre of the prism, as the strength of the prism indicates the amount of deviation present. The Maddox rod is a handheld instrument composed of red parallel plano convex cylinder lens , which refracts light rays so that a point source of light is seen as a ...

3. Prism correction - Wikipedia

   en.wikipedia.org/wiki/Prism_correction

   Prism dioptres. Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [2]

4. Prism fusion range - Wikipedia

   en.wikipedia.org/wiki/Prism_fusion_range

   The prism fusion range (PFR) or fusional vergence amplitude is a clinical eye test performed by orthoptists, optometrists, and ophthalmologists to assess motor fusion, specifically the extent to which a patient can maintain binocular single vision (BSV) in the presence of increasing vergence demands. Motor fusion is largely accounted to ...

5. Buttigieg is pouring billions into accessibility. He says it ...

   www.aol.com/buttigieg-pouring-billions...

   Transporation Secretary Pete Buttigieg poured billions into accessibility efforts. He wants you to know it’s yielding results. The Department of Transportation has invested billions of dollars ...

6. Michael Keaton explains how Jenna Ortega made new ...

   www.aol.com/michael-keaton-explains-jenna-ortega...

   "Beetlejuice Beetlejuice" stars Catherine O'Hara (far left), Winona Ryder, Michael Keaton and Jenna Ortega pose with director Tim Burton for a portrait at New York's Essex House.

7. NASA finally gives Boeing Starliner capsule a return date ...

   www.aol.com/nasa-finally-gives-boeing-starliner...

   Explore the universe with news on fascinating discoveries, scientific advancements and more. After 12 weeks in space, Boeing’s Starliner spacecraft is finally set to return home from the ...

8. Rumford fireplace - Wikipedia

   en.wikipedia.org/wiki/Rumford_fireplace

   Rumford fireplace. The Rumford fireplace is a tall, shallow fireplace designed by Sir Benjamin Thompson, Count Rumford, an Anglo-American physicist best known for his investigations of heat. Its shallow, angled sides are designed to reflect heat into the room, and its streamlined throat minimizes turbulence, thereby carrying away smoke with ...

9. Was Abraham Lincoln gay? A new documentary suggests he was a ...

   www.aol.com/news/abraham-lincoln-gay-documentary...

   The documentary asserts that Lincoln had long-term relationships with several men, the first being Billy Greene, whom he met at a general store in Illinois, where he lived as a young man.