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Regular and irregular reflection of light. Specular and diffuse reflection diagram. Incident and reflected rays. Smooth and rough surfaces. Vector illustration isolated on white background.
Black random dots on white background. Small polka dots seamless background pattern. Vintage texture.
Positive female caregiver visit smiling senior disabled grandmother check heart rate, young woman doctor use statoscope do regular checkup of old lady patient at home, elderly healthcare concept
Morning run. Angle view of grey-haired woman wearing tight leggings with top and sport jacket jogging on fresh air. Elderly lady keeping in good shape through regular training.

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