Before each flight, I always notice a detail: the flight attendant walks around the cabin holding something like a "lighter", occasionally pressing a button.
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Every time I see this scene, my curiosity is like thousands of ants crawling noisily in the bottom of my heart.
Everything on board was so under control, but this act confused me.
Finally, one time, I couldn't help but go up to the captain who was idle, "What is this 'lighter' for?" The captain smiled, secretly appreciating my enthusiasm and curiosity about flying.
"That's not a lighter, it's an in-cabin mass balancer.
He replied, "Before the flight, the flight attendant will check the balance of the passengers in the cabin through this device to ensure the stability of the flight."
Whenever they reach the optimal equilibrium point, they gently press the button, and the small hammer inside the device will strike once, transmitting a signal.
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That's why you see them pressing the 'lighter' from time to time when they're moving around.
It dawned on me that every flight had so many calculations and fine-tuning that I couldn't touch or see.
This is also for the safety of our journey, and the flight attendants are paying silently.
Removing my doubts, I smiled and thanked the captain.
When I get on a plane in the future, I will feel more at ease, because I know that someone is silently protecting our safety.
"Please fasten your seatbelts, let's get ready to take off.
The captain turned back to the cockpit, and I saw the flight in a new light.
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