Use the arrow keys to move between letters. Press Enter or Space on the first letter of a word, then again on the last letter. Press Escape to cancel.
A few of the words
- FILAMENT
- Edison tested thousands of materials before settling on a carbonized thread of cotton as his winning filament, the slender loop that glowed inside the bulb on October 18, 1879.Find this word in the grid to read its note.
- MENLO
- Edison called his Menlo Park, New Jersey facility an 'invention factory', it was among the first industrial research laboratories in the United States.Find this word in the grid to read its note.
- VACUUM
- Pumping air out of the glass bulb was essential; without a vacuum, the filament would burn up in seconds rather than glowing for hours.Find this word in the grid to read its note.
- WATTS
- James Watt, for whom the unit of electrical power is named, had died decades before Edison's breakthrough, but his name lit up every socket that followed.Find this word in the grid to read its note.
armchairpuzzles.com · free large-print word searches
Thomas Edison light bulb word search
Thomas Edison's "Invention Factory" Opens in Menlo Park: a free online word search
Thomas Edison light bulb word search set inside the Menlo Park invention factory, where CARBON and FILAMENT are waiting in the grid just as they were in 1879.
About Thomas Edison's "Invention Factory" Opens in Menlo Park
On October 18, 1879, Thomas Edison and his team inside the cluttered laboratory at Menlo Park, New Jersey, watched a carbonized thread sealed inside a glass bulb hold its glow for more than thirteen hours, proof, at last, that practical electric light was real. The workshop hummed with copper wire, hand-pumped vacuum tubes, and the smell of scorched carbon as Edison's crew pushed the fragile filament further and further into the night. Within weeks he was demonstrating the system publicly, and within a few years gas lamps were giving way to electric light on streets across America.
How to play
- 1Find a word.Tap its first letter, then tap along to its last. The trail fills in and finishes itself when it spells a word. Or press the first letter and drag.
- 2Words run in straight lines.Across and down, and on the harder difficulties diagonally and backwards.
- 3It marks itself.Each word you find takes on its own soft color on the grid and is crossed off the list.
- 4Choose a difficulty.The level you pick sets those directions and how much the word list helps, never the grid size. Tap the A buttons at the top to enlarge the letters, or pinch the grid.
Prefer pen and paper?
A clean, large-print sheet. Free, and no sign-up.
More to explore:All On This Day word searchesPrintable On This Day word searches