An overview of the electromagnetic spectrum: radio waves, microwaves, infrared light, visible light, ultraviolet light, x-rays, and gamma rays. Presented by Dr. Frank Summers.
The Electromagnetic Spectrum – Cosmic Concepts
مجموعة كبيرة من المقاطع العربية
An overview of the electromagnetic spectrum: radio waves, microwaves, infrared light, visible light, ultraviolet light, x-rays, and gamma rays. Presented by Dr. Frank Summers.