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Why does the fire go out when there is a lack of air?

Has anyone ever tried to extinguish a candle with a glass? 😮 Have you ever wondered why the fire is so easy to extinguish, even though there are candles! This clip, Everyday Science, will take you in a few seconds to tap into the science behind "burning"!

In this clip, you will know:

What is the "triangle of fire"? (It's 3 sidekicks that fire can't live without!)

Why is "oxygen" the most important in combustion?

A simple science that helps us understand everything around us!

After watching it, you will understand more about why the lights are out! 😉 Click Like, Share and Follow Everyday Science to get fun science around us!

# Everyday Science # Blackout # Fire # Chemical science # All around knowledge# Substances of knowledge # experiments

2025/11/7 Edited to

... Read moreไฟต้องการองค์ประกอบหลัก 3 อย่างเพื่อให้เกิดการเผาไหม้ ซึ่งเรียกว่า "สามเหลี่ยมของไฟ" ได้แก่ เชื้อเพลิง ความร้อน และออกซิเจน เชื้อเพลิงหมายถึงวัตถุที่สามารถเผาไหม้ได้ เช่น เทียนไข ความร้อนหรืออุณหภูมิสูงจะช่วยจุดไฟให้ติด ส่วนออกซิเจนเป็นก๊าซสำคัญที่เข้ามาสนับสนุนปฏิกิริยาเคมีระหว่างเชื้อเพลิงและความร้อน เมื่อคุณนำแก้วครอบเหนือเปลวเทียนที่กำลังลุกไหม้ ส่วนที่จับอากาศภายในแก้วจะถูกจำกัดและกลายเป็นพื้นที่ที่ไม่มีออกซิเจนเพียงพอสำหรับการเผาไหม้ไฟ เมื่อออกซิเจนในแก้วหมดลง ไฟก็จะดับอย่างรวดเร็ว เหตุการณ์นี้สามารถอธิบายได้จากความจำเป็นของออกซิเจนในปฏิกิริยาออกซิเดชันที่เกิดขึ้นในไฟ หากไม่มีออกซิเจนเพียงพอ ปฏิกิริยานี้ก็ไม่สามารถดำเนินต่อไปได้ เพราะไฟจะสูญเสีย 'เพื่อนสนิทร่วมเผาไหม้' จำเป็นอย่างใดอย่างหนึ่งในสามเหลี่ยมของไฟ นอกจากนี้ การเข้าใจ "สามเหลี่ยมของไฟ" ยังช่วยให้เรารู้วิธีป้องกันและดับไฟได้อย่างปลอดภัย เช่น การตัดแหล่งเชื้อเพลิง ลดความร้อน หรือจำกัดการเข้าถึงของออกซิเจน ในชีวิตประจำวัน การรู้จักหลักการเหล่านี้ทำให้เราเข้าใจถึงเหตุผลว่าทำไมเมื่อครอบแก้วบนเปลวเทียน ไฟจึงดับ ทั้งยังสามารถนำไปใช้ในสถานการณ์จริง เช่น การดับไฟขนาดเล็กอย่างปลอดภัย หรือการใช้ความรู้ในด้านความปลอดภัยอัคคีภัยได้ดีขึ้น ดังนั้น "สามเหลี่ยมของไฟ" และความสำคัญของออกซิเจนจึงเป็นหัวใจสำคัญของกระบวนการเผาไหม้ที่เราเห็นกันทุกวัน และทำให้เราเข้าใจปรากฏการณ์ที่ไฟดับเมื่อขาดอากาศได้อย่างชัดเจน

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