She is a Filipina pediatrician, known as the "Mother of Philippine Pediatrics". She made significant contributions in the field of medicine, particularly in:

* Nutrition and childcare: She developed innovative and affordable methods for caring for children in developing countries, including the "Del Mundo Feeding Bottle" and the "Del Mundo's Multi-Purpose Food."

* Pediatric care: She established the first pediatric hospital in the Philippines and dedicated her life to improving the lives of children.

* Public health: She actively promoted health education and vaccination programs for children.

While Dr. Fe del Mundo's contributions to physics are not significant, her impact on the field of pediatrics is undeniable and continues to inspire generations of doctors and healthcare workers worldwide.