How were X-rays perceived in the early days?

How were X-rays perceived in the early days?

• A. They could be tasted.
• B. Not detectable by human senses.
• C. They could be seen with the naked eye.
• D. They could be heard.

Answer: (B)

X-rays are invisible to human senses; they are a form of electromagnetic radiation with wavelengths shorter than visible light, so you cannot see, taste, hear, or feel them directly. In the early days, people couldn’t perceive them without instruments. Their presence was revealed because they could make fluorescent screens glow or expose photographic film when the rays passed through objects. This is why the idea that they are not detectable by human senses best explains how they were perceived at first.

X-rays are invisible to human senses; they are a form of electromagnetic radiation with wavelengths shorter than visible light, so you cannot see, taste, hear, or feel them directly. In the early days, people couldn’t perceive them without instruments. Their presence was revealed because they could make fluorescent screens glow or expose photographic film when the rays passed through objects. This is why the idea that they are not detectable by human senses best explains how they were perceived at first.