Yes, there are numerous things that one can see but cannot touch. Here are a few examples:
1. Rainbows: Rainbows are optical and meteorological phenomena caused by reflection, refraction, and dispersion of light in water droplets. While you can see them, they are not physical entities that you can touch.
2. Mirages: Mirages are optical illusions created by the bending of light in the atmosphere. They can make distant objects appear reachable, but they are not tangible.
3. Holograms: Holograms are three-dimensional images created by the interference of light beams. Although they give the illusion of depth, they are projections and cannot be physically touched.
4. Shadows: Shadows are the absence of light caused by an object blocking light. While you can see them, shadows are not tangible objects themselves.
5. Stars: Stars are distant celestial bodies that emit light. Even though they are visible in the night sky, they are incredibly far away, and you cannot touch them.
6. Reflections: Reflections in mirrors or water surfaces are optical effects, and the images they produce are not physical objects.
7. Illusions: Various optical illusions, such as those found in art or certain visual tricks, create images that appear real but have no physical substance.
8. Dreams: While not something you "see" with your eyes when you're awake, dreams are visual experiences during sleep that are not physically touchable.
In general, phenomena that are purely visual or optical illusions often fall into the category of things that can be seen but not touched.