MANKHI, Kawthar Kazem. Testing The Performance of a Solar Heater Using Convex Lenses as a Means of Concentrating Solar Radiation. International Journal of Discoveries and Innovations in Applied Sciences, [S. l.], v. 5, n. 1, p. 8–12, 2025. Disponível em: https://oajournals.net/index.php/ijdias/article/view/2694. Acesso em: 2 aug. 2025.