"This is called the Nicholas Egg Erector!" After hearing Xixi's whisper, Lu Benjie turned to look at her with a smile and said, "Didn't we say that we couldn't make the egg stand up just now? But this can help us make the egg stand up and spin! "
Xi Xi hadn't gotten over the awkwardness just now. She had accidentally sent the egg that Aunt Lu had cooked for Uncle Lu flying and breaking. Feeling guilty and embarrassed, she hurriedly avoided Uncle Lu's gaze and fixed her eyes on the strange box.
The Nicholas Egg Erector that Lu Benjie was talking about was actually a special name in this world. In Yang Yi's previous life, this thing was called Tesla's Columbus Egg. Of course, Yang Yi hadn't learned about this in his previous life, but now he was also watching with great interest.
Not to mention Yang Yi, the other parents were also craning their necks curiously. If they hadn't been a little reserved, they probably would have mixed in with the children and watched.
At this time, Lan Xin, who had been looking at the broken egg, came back to her senses and asked curiously, "But the egg is already broken. How can it spin?"
"That's a good question!" Lu Benjie conjured an egg-shaped copper block out of nowhere like a magic trick and showed it to the children with a smile. "This machine doesn't use our ordinary eggs, but the eggs made of copper that you see in my hand."
Of course, Lu Benjie demonstrated to the children again. On an ordinary table, the copper egg still couldn't spin and stand up.
"Next, it's time to witness a miracle. Children, watch carefully. Don't blink!" Lu Benjie deliberately bluffed.
The atmosphere seemed to be tense. The eight children all stared at the wooden box, the wooden plate, and the copper egg in Uncle Lu's hand. They didn't even dare to breathe.
Xi Xi was the same. When she heard that she was about to witness a miracle, her big bright eyes were filled with excitement.
Uncle Lu casually placed the copper egg on the wooden plate and flipped the switch below. The motor below began to hum. However, at this time, the wooden plate didn't move. It didn't spin as fast as the propeller.
Next, the children saw Uncle Lu casually spin the copper egg, and it began to spin.
But that didn't seem right!
The outspoken Chen Shiyun immediately raised her hand and asked in confusion, "Uncle Lu, that's not right! The egg hasn't even stood up yet! "
"That's right, I can do that too!" The girls beside her all started talking at once.
But at this moment, Lu Weisha exclaimed softly, drawing the attention of the children. Because while they were talking, the spinning copper egg actually stood up on its own!
"Amazing!" Xi Xi's already big eyes widened in surprise. She couldn't help but turn her head and look at her father in surprise, as though she wanted to share her feelings of disbelief with him.
The principle of this egg-erecting device wasn't complicated. It used a rotating magnetic field to make the egg spin. Then, it relied on the spinning effect to make the egg find the most suitable spinning position. Because the egg was oval-shaped, only when it stood up and rotated with its long axis as the center would it be stable.
However, this was still a physical principle that many of the children hadn't learned before. Lu Benjie demonstrated it again and began to explain it to the children. The children listened in confusion. They understood a little, but they didn't quite understand. Each of them opened their small mouths and looked at him in confusion. Even the smart Xi Xi didn't seem to understand.
Seeing this, Yang Yi smiled and pointed at the wooden box behind him. He said to the children, "Uncle Lu means that this box of ours uses a more complicated machine to imitate a force that we can't see. It's called magnetic force. It helps us hold this copper egg as if we're holding it with our hands. This way, it can stand up and spin!"
So that's how it is. Although there were a few slow to react and tilted their heads in confusion, Xi Xi, Yang Luoqi, Yu Xiaowei, and the other girls understood. Xi Xi was still in her seat. She giggled, shook her little butt, and said, "That, that's too amazing. We can't see it!"
Lu Xiaoyu rubbed Xi Xi's arm and said innocently, "I know, that must be magic!"
At this time, Lu Benjie called the children to another lower table. This way, everyone could gather together and observe without sitting down. It was convenient for them to move around.
"That was just a small magic spell. Next, we're going to witness an even more amazing magic spell. A magic spell that you can't even think of!" Lu Benjie said mysteriously.
"There's more magic to watch!" Lan Xin and Chen Shiyun cheered happily. The other girls also laughed excitedly. Nan Zhaoyu also jumped with joy.
Lu Benjie carried over a very smooth round cushion. It was made of wood and was very heavy. No one knew what was inside. He then took out a small spinning top. It looked a bit like the one that was spinning in the Inception Space. However, it wasn't made into a whole. The yellow frame and the bronze vertebral body were exquisite and cute!
In the eyes of the children, it was as if it was some magical little toy that attracted their attention.
"Which child has played with this spinning top before?" Lu Benjie asked.
Instantly, a few children, including Xi Xi, raised their hands excitedly. However, Xi Xi was a little embarrassed. She raised her hand and hesitated whether she should put it down.
"How many children haven't played with it before? Which child is willing to come up and show us how this spinning top is done? "Lu Benjie asked with a smile.
At this time, Xi Xi shyly withdrew her hand. She was still thinking about her mistake. It wouldn't be good if she messed it up again!
Lu Benjie originally wanted to call her, but Xi Xi withdrew her hand. Lu Benjie didn't want to make this privilege too obvious, so he called the more enthusiastic Chen Shiyun.
There was nothing much to say about spinning a spinning top. The technique was similar to spinning an egg. But then, Lu Benjie asked Chen Shiyun to do a demonstration. Xi Xi, who had been watching just now, was envious!
Lu Benjie asked Chen Shiyun to spin the spinning top on a small cover. Then, Lu Benjie gently lifted the small cover. He didn't lift it too high, only a centimeter or two. At this time, the spinning top was still spinning on the cover.
Xi Xi was surprised to see Uncle Lu gently lift his hand. The cover was taken away, but the spinning top was suspended in the air and kept spinning.
"Magic!" Lu Xiaoyu exclaimed.
"That's right. This is the magnetic magic that we created using the same magnetic force. Look, there's actually no support below us!" Lu Benjie was still smiling. He took a glass cup and put the spinning top in horizontally. Then, he took it away. The spinning top seemed to be unaffected at all. It continued to float in the air and spin slightly!
"Amazing!" Xi Xi was envious.
The little girl was a little regretful. Why didn't she try it bravely? It would have been great if she could have tried it too. It wasn't fun just to watch. If she had held the spinning top and spun it, she could have participated in this "magic". How great would that have been?
She had missed Uncle Lu's magic!
Thinking of this, Xi Xi sullenly pouted because of regret. Although she didn't say anything, she took a step back and snuggled up to her father sadly. She even hugged her father's empty hand and started counting her father's fingers unhappily.
What was the principle of magic? Xi Xi didn't really care. She couldn't even listen to Uncle Lu's endless explanation. She just stared at the spinning top eagerly.
"Do you want to play too?" Yang Yi asked with a smile. He could roughly guess what his daughter was thinking.
Xi Xi pursed her lips, looked back at her father, and nodded shyly. She was afraid that her father would laugh at her for breaking the egg, so she lowered her head and shook her little butt to show her inner desire.
Yang Yi gently patted the little girl's head and said with a smile, "Wait a minute. Let Uncle Lu finish."
Yang Yi didn't go back on his words. After Lu Benjie finished, he asked him to stop the spinning top and let each child try it. "Only by trying it with your own hands can you have a deeper understanding."
Xi Xi saw that Uncle Lu agreed, and a surprised smile appeared on her little face again. Waiting in line was nothing. When it was her turn, Xi Xi happily pulled her father's hand and said with reliance, "Papa, I'll play with you, okay?"
The little girl was worried that she would make a mistake! She only had confidence when her father was with her.
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