Where does this come from, and can I check it?

Chemical surface treatments cause raindrops to bead up and slide off fabric. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a everyday life fact?

Yes. It sits on the Everyday Life shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

What else can I read about it?

The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

Umbrella canopies rely on hydrophobic water repellent coatings

Chemical surface treatments cause raindrops to bead up and slide off fabric

Woven synthetic umbrella fabrics like polyester or nylon are coated with durable water repellent finishes. The hydrophobic coating increases water surface tension, forcing rain droplets to bead up into tight spheres that roll off the canopy weave rather than soaking through the fabric.

Where this comes from

Encyclopaedia Britannica

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

Go further

Science trivia General Knowledge trivia

More facts like this

Folding umbrellas rely on articulated runners and tensioned rib jointsSliding central runners push hinged ribs outward to tension waterproof canopies Banknote currency is printed on cotton and linen textile fabricPaper money uses woven textile fibres rather than traditional wood cellulose pulp Mary Anderson patented the mechanical car windscreen wiper in 1903A lever-operated rubber blade cleared sleet from trolley and car windscreens Torricelli invented the mercury barometer to measure air pressureWeight from atmospheric air supports a column of liquid mercury inside sealed glass Commonwealth Bay is recognised as the windiest place on EarthKatabatic winds regularly reach speeds exceeding 240 kilometres per hour The heaviest hailstone on record weighed just over a kilogramIt fell in Bangladesh in 1986 and killed several people

Tags: umbrellas, textiles, weather

Umbrella canopies rely on hydrophobic water repellent coatings: the short answers

Where does this come from, and can I check it?: Chemical surface treatments cause raindrops to bead up and slide off fabric. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a everyday life fact?: Yes. It sits on the Everyday Life shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.