Why do pocket calculators' LCD displays start to fade when their batteries are low, but remain clearly visible when viewed at steep angles and through various rotations? - Quora
Why do pocket calculators' LCD displays start to fade when their batteries are low, but remain clearly visible when viewed at steep angles and through various rotations? - Quora
![Amazon.com: Practical Solar Calculator Simple and Cute Calculator 12-Digit Screen Display is Suitable for Student Office (White) : Office Products Amazon.com: Practical Solar Calculator Simple and Cute Calculator 12-Digit Screen Display is Suitable for Student Office (White) : Office Products](https://m.media-amazon.com/images/I/51VeS1mhyNL._AC_UF894,1000_QL80_.jpg)