article_snippet.sent: In 1977, German botanist Wilhelm Barthlott studied the surface of a lotus leaf under a microscope and found that instead of having a smooth surface, the leaf was covered in microscopic bumps .
article_snippet.sent: In 1977, German botanist Wilhelm Barthlott studied the surface of the leaf under a microscope.
article_snippet.sent: German botanist Wilhelm Barthlott discovered that instead of having a smooth, waxy surface, the leaf was covered in microscopic bumps.
article_snippet.sent: In 1977, German botanist Wilhelm Barthlott studied the surface of a lotus leaf under a microscope.
article_snippet.sent: German botanist Wilhelm Barthlott discovered that instead of having a smooth, waxy surface, the leaf was covered in microscopic bumps.