Amid the doubts of the crowd, Lin En did not rush to explain, but asked back.

"You all know that light can be reflected, right?"

The wizards in the auditorium all nodded. Reflection is the basic property of light, and most polarization magic uses this principle.

"The colors we see are actually the result of light shining on an object, then being reflected into our eyes and recognized by photoreceptor cells." Lin En explained. "Human sensory cells can only distinguish three colors: red, green, and blue. Since the visible solar spectrum is evenly mixed, it is colorless in our eyes..."

"Wait, Master Lin En, if that's the case, wouldn't everything have the same color under the same light?" Sanchez interrupted.

"Of course not, because part of the light is absorbed by the object, and we only see the reflected visible light..." Lin En said.

To be more precise, it is the light reflected by an object that enters the human eye, is converted into electrical signals on the retina, and is transmitted to the brain through the optic nerve. The so-called color is just a human definition of the visual effect of electromagnetic waves in a certain frequency band of visible light...

Regarding this point, after he mastered electromagnetic force, he verified it in Yieta, so he naturally had full confidence.

Lynn's words echoed throughout the auditorium, and the arguments and discussions in the audience became louder and louder.

"This theory is really... too amazing!" Raphael looked at Lin En and couldn't help but say. "Doesn't that mean that this world is actually colorless?"

In the past, they believed that elements themselves had certain colors, and the objects they combined would show corresponding colors, and light only allowed them to see these colors that originally existed or were attached to the surface of the elements.

However, Lin En's statement is completely the opposite. All colors come from light, and what they see is the light that is rejected by objects, while those that are absorbed cannot be seen?

In other words, a red object is actually not red at all. Instead, it reflects all red light and absorbs light of other colors.

Theoretically, if we can find a way to "see" the "light elements" inside an object, this thing should show a mixture of other colors? Raphael understood Lin's words with great difficulty. It was really hard to imagine a world with inverted colors.

"That's right, without light, there is no color." Lynn nodded, agreeing with Raphael's words.

"This is simply absurd!" The great wizard in purple slammed the table and stood up, shouting loudly. "So everything we see is the opposite, a black object absorbs all light and is actually very bright, but we can't see it?"

"No, that's not the case. Since the light is absorbed and not reflected, it naturally won't light up." Lin En shrugged and continued speaking.

"And you can think about it, if you stay in a sealed space at night, can you see colors? So colors exist precisely because of light."

Hearing this, Rafael and others were all stunned for a moment. Sanchez frowned, thinking that Lin En's statement was unreliable.

"Master Lin, magic requires rigorous argumentation, not empty guesswork! We can't see anything without light. Does that mean they don't exist just because we can't see them?" Glenn, standing on the podium, mustered up the courage to refute. He was the person who was least willing to believe this argument.

After all, this concerns whether he can obtain the Morning Star Medal. Once it is confirmed that the original color is not the essence of light, but a phenomenon caused by physiological reasons, the importance of his research results will plummet.

However, as Glenn's courage gradually faded away as he argued with a great wizard, who was also the most sought-after magic star in the wizarding land, cold sweat began to break out on his forehead.

Lynn didn't pay attention to Glenn's slightly sharp questioning, and said with a smile, "Very good rebuttal, you are right, every magic theory needs to be verified by experiments!"

"Now, please seal up the windows and doors of this auditorium... don't let any light in!"

After Lin En finished speaking, the wizards sitting by the windows in the auditorium cast spells together to block all the doors and windows. The originally bright academic seminar scene immediately became extremely dark, leaving only a little light from the top of the tower directly above their heads.

"Who has a mirror on him?" Lin En asked again.

"I have it with me!" Glenn took a step forward and took out a round mirror from his arms. He has been doing experiments related to light recently, so of course he would always keep the mirror with him.

"Very good!" Lynn nodded, then called Johnny over, asked her to stand in front of the platform, and used a round mirror to reflect the light falling from above her head onto the girl.

In the darkness, Johnny's figure was extremely conspicuous. She was wearing a bright red dress, the hem of which swayed gently like a flame.

"Do you know what color clothes she is wearing?" Lin En asked.

"Red, of course!" Glenn replied.

"Can't anyone see this?" Raphael curled his lips, not understanding why Lin En asked such a stupid question.

"Please remember your current judgment! The clothes are red, don't forget it!" Lin En said meaningfully.

Raphael was speechless. Could it be that the clothes could turn blue later? He wanted to see what the other party was up to!

Lin En turned his gaze to the girl in the red dress and said with a smile, "You have a very fair complexion and are very beautiful..."

Johnny didn't expect that the dean would say this in public. He seemed a little shy and uneasy under the ambiguous gazes of the wizards around him.

This is very suitable for experiments...Lin En silently swallowed the second half of the sentence.

"Next we'll need your...light dissociation device!" Lynn walked up and patted Glenn on the shoulder, greeting him.

"What should I do, Master Lin?" Glenn asked nervously, holding the invention in his hand.

"First, decompose the light like we did just now..." Lynn explained the steps to Glenn step by step in great detail. Only after he was sure that the other party understood, he announced that the experiment could begin!

(End of this chapter)