What part of the electromagnetic spectrum can we see with our eyes?UltravioletNear-InfraredMicrowaveVisible

Understanding the Electromagnetic Spectrum

The electromagnetic spectrum encompasses a wide range of wavelengths and frequencies, each with different properties and implications. The portion of the spectrum that is visible to the human eye is known as the "visible spectrum."

Key Points

1. Visible Spectrum: This part of the electromagnetic spectrum ranges from approximately 400 nm (nanometers) to 700 nm. It includes the colors red, orange, yellow, green, blue, indigo, and violet.

2. Ultraviolet (UV): This range sits just outside the visible light spectrum, with wavelengths shorter than 400 nm. Humans cannot see UV light, though some animals can.

3. Near-Infrared (NIR): Situated beyond the visible spectrum on the longer wavelength side (700 nm to around 1 mm), near-infrared light is also invisible to humans.

4. Microwave: This range extends further out, typically starting around 1 mm wavelength and covering larger wavelengths. Microwaves are used for communication and cooking but are not visible.

Conclusion

The correct answer is "Visible," as this is the part of the electromagnetic spectrum that we can see with our eyes.