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User experience outline vector icon. Thin line black user experience icon, flat vector simple element illustration from editable startup concept isolated stroke on white background
Needle of declination, vintage engraved illustration. From the Universe and Humanity, 1910.
Constant lamp, vintage engraved illustration. Industrial encyclopedia E.-O. Lami - 1875.
The first image is of clamps used in chemistry labs to hold test tubes and other apparatuses, vintage line drawing or engraving illustration.
CV letter on table
Businesswoman holding test tube
The expansion of solids by heat is clearly shown by the following experiment, vintage line drawing or engraving illustration.

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