Joey said goodbye to Professor Koch and his senior brothers and continued his plan.

There are three small circles left, and at this time it has evolved into two. Professor Rongen and Professor Weber have merged with the circles of German mineralologist Professor Hart and others, and are enthusiastically exchanging some information about ores; while Professor Carl Negri and several white elders are arguing about something about genetics.

Joey thought about it and naturally, the circle of heated discussions is easier to accept outsiders. He rashly joins a circle of disputes, but it is easy to hurt innocent people.

"Well, it's good to visit Professor Rongen and Professor Hart first." Joey set a goal for himself to visit next.

When he walked into Professor Rongen and Professor Hart, Joey found that they were discussing the British Sir Crooks Min's Crooks.

"William, I think I have a few ore specimens that can help you with these things you mentioned." Professor Hart said to Professor Rongen. "One is a sedrael ore that is symbiotic with calcite and black casticite. I have accidentally discovered this sedrael ore, which can produce purple fluorescence after heating; the other is an ore produced in the lead-zinc ore, called the black crystal of the sphalerite."

"Thank you so much, Gerald. If possible, I would like to invite you to have a drink tonight." Professor Rongen happily invited everyone and saw Joey at random, "Hey, Prince, hello."

"Hello, Mr. Rongen; hello, Mr. Hart; hello, Mr. Weber..." Joey bowed to the great people in this circle who could remember his name.

"We have heard your speech just now, very good. You have refined your father's Crown Prince's idea. We all look forward to you coming here to help us find out what goals we can make concrete." Professor Weber, the largest in this circle and is also the most familiar with the Crown Princess family, said.

"Dear Professor Weber, I just made some insignificant suggestions. The key to the German Science Exhibition is to rely on the brains of all the masters. I just did a little thing for my father." Joey said modestly, "and I would like to ask you professors, if you can, please call me Joey directly."

"Oh, Joey, we've listened to you just now, so we're all trying to see if we can transform some of the knowledge we have into specific things that can be applied, for example, listening to your conversation with Professor Helmholtz about electricity and light, we're a little enlightened to Professor Weber and me. We thought of Sir Crooks's Crooks tube, which emits light when ionizing some compound gases, and the current required is very small. In our opinion, it may be an ideal light source." Professor Rongen said at Joey with affectionately.

"Mr. Rongen, are you talking about the lamp for ionizing gas light?" Joey asked.

"Yes, this is the light principle of Cruise tubes, but the biggest problem now is that after ionization, the light emitted by many metal element gases is colorful. For example, what Professor Hart said just now, some of them emit blue-purple light. I have also seen green light and red light..." Professor Rongen shrugged, "In short, all kinds of colors are there, but there is no such light color close to white candles. You must know that under red light, green light or purple light for a long time, people's eyes cannot bear it."

"Ionization light, why is this word so familiar? By the way, the ultraviolet disinfection lamp in the hospital." Joey's thinking was obviously dispersed by Professor Rongen's speech. "Yes, ultraviolet rays are very effective in disinfection, and some agricultural pests have a strong phototactic properties on ultraviolet rays. This thing is great!"

"But ionizing light seems to be not just an ultraviolet disinfection lamp, but there should be many things that can also use this principle... For example... For example, my god, why can't I remember it?" Joey frowned and thought hard.

Professor Rongen looked at Joey, who was muttering to himself with a gloomy face and gritted his teeth. He felt a little embarrassed. He turned to Professor Weber and smiled, "Joey's face when he was thinking is really wonderful, just like the... palette in the hands of the painter."

"Palette?!" Professor Rongen's word is like a lightning bolt hit Joey.

"Yes, palette! Professor Rongen, you are right, it's palette!" Joey jumped up excitedly!

"Mr. Professor, you have just said that red, green, and blue light are harmful to the human eyes, that's right! But have you ever thought about it? How did the white paints used by painters when painting?" Joey looked at Professor Rongen with expectation.

"Joey, I'm not very familiar with painting." Professor Rongen replied a little awkwardly.

"Joey, are you talking about the three primary colors of red, green and blue?!" Professor Weber said to Rongen with an epiphany expression with a certain emotion, "William, the Cruise tube is usually ionized with a substance, so there are monochromatic colors of red, green and blue, but if several substances with different colors are mixed in it, what might be the ionized color?"

"Maybe it's white light?" Professor Rongen said hesitantly.

"It may be white light." Professor Weber nodded with a smile.

"It must be white light!" Joey nodded with great strength.

Professor Weber smiled and patted Joey on the shoulder and said, "It's not so sure before the experiment. Professor Rongen still needs a lot of experiments."

Joey smiled and then said to Professor Rongen, "Professor Rongen, you can produce ionizing lamps with blue and purple lights, as well as red and green ones. Please don't give up, maybe it will have a lot of functions."

"What new ideas do Joey have?" Professor Weber asked with a smile.

"Dear Professor Weber, since Sir Newton discovered that the sunlight is composed of light of different wavelengths and different wavelengths represent different colors, I thought that since God created each color, each color has its own reason, which requires Professor Rongen and everyone to slowly emerge." Joey cunningly and cunningly started to think about it.

"Relying on the phototactic nature of insects to kill them, this is the present of biological agriculture in the second half of the 20th century. Now there is no black light. I said that I would seek death... As for traffic lights... I don't even have cars now, and this purpose is also seeking death... It's better to wait until the conditions are ripe in the future, and it's natural to say it. It's better to keep your mouth shut now." Joey thought to himself.

"Huh!" Professor Rongen breathed a long sigh, "I have to admit that although Joy is young, he has many ideas that are genius. I have never thought that I could also learn from painting knowledge."

"Mr. Professor, I'm so ashamed to say that. These thoughts...uh...in fact..." Joey got stuck. These thoughts were not Joey's own. Applying the principle of three primary colors to fluorescent lamps was all created by later generations of Philips in the Netherlands. Otherwise, how could Philips fluorescent lamps be a world-famous brand...

"No matter whether it is yours or not, you can open a window. Professor Rongen is likely to find more from it! Is it Joey?" Professor Weber looked at Joey with emotion.

"Of course, Professor Weber and Professor Rongen's achievements are never on an ionizing lamp." Joey said loudly.

"Professor Rongen's x-rays are his greatest achievement!" Joey added in his heart.
Chapter completed!