40 Things Whose Purpose Was Unknown Until the Internet Came to the Rescue

[post_page_title]A fire grenade in a research lab[/post_page_title]

Finding strange things in the woods or in your backyard is one thing, but it’s something completely different when you discover it in a research lab. It looks like this glass item has something inside it. The original poster, themselves a scientist, is totally stumped.

A fire grenade in a research lab

They would discover that it actually is a fire grenade from the early 1900s. According to social media, the reason some were just filled with good old H20 and others were filled with random chemicals is to help put out any fires by smothering them.

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