You might have heard of the term "inverse ETFs" in recent years, but what is an inverse ETF and is it something you should consider? Exchange-traded funds (ETFs) have become one of the most ...

Bonds have an inverse relationship to interest rates. When interest rates rise, bond prices usually fall, and vice-versa. To those unfamiliar with bond trading, the negative correlation between ...

"Hell's Greatest Dad" sees Lucifer and Alastor compete in a strange song ... What makes this song work so well is that it is ...

The relationship between irradiance, \(I\), and distance, \(d\), can be shown to follow an inverse square law. \(I=\frac{k}{d^{2}}\) The product of irradiance and the square of the distance from ...

Monard, François and Stefanov, Plamen 2023. Sampling the X-ray Transform on Simple Surfaces. SIAM Journal on Mathematical Analysis, Vol. 55, Issue. 3, p. 1707.

A lamp illuminates a screen of area \(2.0m^{2}\), which is \(4 m\) away. The irradiance at the screen is \(0.02Wm^{-2}\). a) Calculate the power of the incident beam. b) If the screen is moved to ...