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Questions asked about optical illusions;
1: What are optical illusions?
2: What types of optical illusions are there?
3: What effects do optical illusions have on the brain
4: What causes optical illusions?
optical axis
the adhesive active when exposed to UV, and the adhesive remain active afterward. Clear residue, work well for glass and optical window.
light is must for optical microscope while is not necessary for nonn optical one
No, it is not an optical illusion.