Filipino math teacher Emma Rotor helped develop crucial WWII weapons tech

Devoted wife of a famed Filipino writer, she worked on the proximity fuze

In a black and white photo, Emma Rotor is show from the shoulders up with a smirk expression.

There were rumors that Emma Rotor was involved in the Manhattan Project. But historical records suggest she instead worked on the proximity fuze, the mechanism that makes a bomb or shell detonate when it gets close to its target.

The Unson Family

As an amateur historian studying Philippine-American history in Washington, D.C.,