20 gadgets that changed the world

See the top inventions that changed the way we live.

20. DUCT TAPE  
Duct tape or duck tape is cloth- or scrim-backed pressure-sensitive tape often coated with polyethylene. During World War II, Revolite, then a division of Johnson & Johnson, developed an adhesive tape made from a rubber-based adhesive applied to a durable duck cloth backing. This tape resisted water and was used as sealing tape on ammunition cases during World War II.

20. DUCT TAPE Duct tape or duck tape is cloth- or scrim-backed pressure-sensitive tape often coated with polyethylene. During World War II, Revolite, then a division of Johnson & Johnson, developed an adhesive tape made from a rubber-based adhesive applied to a durable duck cloth backing. This tape resisted water and was used as sealing tape on ammunition cases during World War II.

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