Net profit margin shows a company's remaining revenue after expenses as a percentage. To calculate net profit margin, divide net income by revenue and multiply by 100. Comparing net profit margins ...

ROA measures profit relative to a company's total assets; higher ROA indicates better financial efficiency. ROA is calculated with either net income and total assets or with net profit margin and ...

Geographic atrophy due to age-related macular degeneration (AMD) is the leading cause of irreversible blindness and affects more than 5 million persons worldwide. No therapies to restore vision in ...

New images reveal microstructures that, depending on how the wind blows, help give a dandelion seed lift-off or the grip needed to wait for a better breeze.

A rectangle has two pairs of equal sides. It has four right angles (90°). The opposite sides are parallel. The diagonals bisect each other. A parallelogram has two pairs of equal sides. It has two ...

Abstract: A polarization-insensitive and angle-insensitive metamaterial absorber containing metallic resonators printed on a dielectric substrate, a layer of pure water, and a metallic ground plane ...