| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | electromagnetic spectrum | US | Teaching both the wave and particle nature of light | 1 |
| 2 | electromagnetic spectrum | United States | The electromagnetic spectrum is commonly divided into several regions, including radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. | 1 |
| 3 | electromagnetic spectrum | United States | The electromagnetic spectrum is utilized for various medical imaging technologies such as X-rays, MRI, and CT scans. | 1 |