I Tried the World's Strangest Fireworks

Summary by Krater

The host investigates the safety and temperature claims of a cold spark machine by testing it on his hand, paper, and a phone camera lens, concluding that while individual titanium particles are extremely hot, their small size and lack of own oxidizer prevent them from causing severe burns or starting fires easily.

From the video

Answers: Are cold spark machine sparks actually cold and safe?

• Cold spark machine safety testing
• Titanium particle temperature and oxidation
• Comparing cold spark machines to traditional fireworks
• DNA ancestry test results with MyHeritage

What it concludes

• Cold spark machine sparks reach extremely high temperatures between 1,400 and 2,000 degrees Celsius.
• The particles do not burn skin or ignite paper because they are extremely small and cool almost instantly upon leaving the nozzle.
• Cold spark particles lack their own oxidizer and rely solely on surrounding air, causing them to cool rapidly rather than continuing to generate heat.
• Despite being far less likely to cause fires than traditional pyrotechnics, cold spark machines can still potentially ignite materials under the right conditions.