Search Results

All living beings which has eyes will perceive different frequencies of electromagnetic waves as different colors. This post can be divided into 5 parts : - HOW IS COLOR DETERMINED - HOW WE PERCEIVE THEM - RANGE - MIXING COLORS - IDENTIFYING COLORS For the sake of simplicity, let's focus on humans only, unless specified. - - - === < [ 1 ] > === - - - HOW IS A COLOR DETERMINED All living beings which has eyes will perceive different frequencies of electromagnetic waves as different colors. Note that "electromagnetic waves" can be known as "light". Since we perceive electromagnetic waves as vision, the brightness and hue depend on the properties of that wave. We perceive the AMPLITUDE of the wave as BRIGHTNESS, and we perceive the FREQUENCY of the waves as HUES. The shorter the amplitude, the weaker it is, the darker it is; the longer the amplitude, the stronger it is, the brighter it is. - - - === < [ 2 ] > === - - - HOW WE PERCEIVE THEM There are 2 types of cells which help us to see: the CONE CELL and the ROD CELL. Please note that there are nearly 6,000,000 to 7,000,000 cone cells and approximately 120,000,000 rod cells in a single eyeball. Rod cells will send impulses to the brain when the light is "strong" enough (even in a dark room with a tiny light source), this type of cell is what help us to deal with the brightness of the environment. Cone cells will send impulses to the brain when the light is strong enough (say under the sun or a bright room) AND with the suitable frequency of light, this type of cell is what helps us to deal with colors. There are 3 types of cone cells: L-cone, M-cone, S-cone, each will send impulses when a wave with a certain range of frequency is absorbed. To make things clear, try to imagine this: now we have 4 cells: An L-cone, M-cone, S-cone, and a Rod Cell. we put this in a dark room, with no light source yet. Situation 1 : An extremely weak light Only the Rod cell can absorb the weak light and send impulses to the brain, so we can see the weak light, but there is no information of color, so it is black and white and grey. This is why we are usually color blind in a very dark room with weak light sources. Situation 2 : A light with Long Frequency. The Rod cell can pick up the light since this light is strong enough. Since the Frequency is long, the L-cone can pick up the light and send impulses to the brain, our brain will notice that since the L-cone is picking up the long frequency light, the brain will perceive the color as RED. Because the frequency doesn't match the range of M-cone and S-cone, both of these cells will not pick up the light. Situation 3 : A light with Medium Frequency. Same, the Rod cell can pick up the light, so brightness can still be detected. This time the frequency is medium, so the M-cone can pick up the light and send signals to the brain, and the brain will perceive this signal as GREEN. Because the frequency doesn't match the range of L-cone and S-cone, both of these cells will not pick up the light and no signal will be sent. Situation 4 : A light with Short Frequency Same, the Rod cell will do it's job. This time the frequency is short, so the S-cone can pick up the light and send signals, and the brain will perceive this as BLUE. And because the frequency doesn't match, both L-cone and M-cone will not pick up the light and no signal will be sent. - - - === < [ 3 ] > === - - - RANGE Different living beings can see different ranges of light. We humans can perceive light with the frequency with a range of 4 x 10^14 Hz to 8 x 10^14 Hz here are some other examples: Because Cats don't have L-cones, so they have a hard time with differentiating Red and Green, what they usually are Yellow, Green, Blue, Violet, Grey Most Dogs only of 2 types of Cone cells which helps them the discern Blue and Yellow. - - - === < [ 4 ] > === - - - MIXING COLORS There are 2 types of Methods to combine colors and get a "new" color, Additive Mixing and Subtractive Mixing. Additive Mixing is a method where different lights with different wavelengths are added together. This is why the more color we add, the brighter it is. Take the sun as an example: if you combine all the colors we have, (Red, Orange, Yellow all the way to Violet), we have the color of the sun : White, plus, it is super bright that it is advised to do look straight into the sun Try this: get 3 torch lights, a cellophane tape, Red marker, Green Marker, and a Blue Marker. Cover the Torchlight with cellophane tape and color each tape with a different single colors. And start mixing colors ~ Subtractive Mixing is a method where certain wavelengths are removed from the light source. Take Mixing paints or pigments or dyes or most of the things you can find in an art classroom for applying colors. When 2 dyes are mixed, both dye still absorbs the wavelengths they did previously, what is left is the wavelength which both dyes reflect. Plus a dye may absorb some part of the wavelength that the other dye reflects, leaving the light source with a lesser amount of wavelengths, this is why the more color we mix, the darker the color it is. Still confused? Try to imagine this: We have a Red dye and a Yellow dye. Before mixing, the Red dye molecules will absorb all the color except Red, and Red is Reflected, and the Yellow dye molecules will absorb all the color except Yellow, and Yellow is Reflected. When we mix both of them together, in this new dye, the "Red molecule" will reflect Red light and the "Yellow molecule" will reflect Yellow, and what we see is Orange, plus, since the "Red molecules" will ONLY reflect Red light, they will absorb some Yellow Light, since the "Yellow molecules" will ONLY reflect Yellow light, they will absorb some Red Light. IMPORTANT: the 3 primary colors in subtractive mixing are not exactly Red, Yellow, and Blue, it is actually Magenta, Yellow, and Cyan. - - - === < [ 5 ] > === - - - IDENTIFYING COLORS It is possible that "your red" is not my "red", so there are a few ways to define a color or identify a color or tag them: Color codes So far these are some of the color codes used to identify colors : RBG, RGBA, HSV, CMYK. RGB Since color can be mixed through additive mixing, RGB codes shows the ration between the 3 primary colors, Red, Green, Blue. Plus the code is written in Hexadecimal (base 16). Since we know that Yellow is made from the same amount of Red and Green, the RGB color code for Yellow is "#FFFF00". RGBA Almost the same as RGB, the A means Alpha, which means transparency. HSV Also a well-known code, you can see them the most of the drawing or design apps. "H" is for "Hue", which is the frequency of the color, from Red to Violet. "S" is for "Saturation", meaning "how colorful is this", colors with low saturation is nearer to grey, colors with high saturation is nearer to its hue color. "V" is for "Vibrance", also can be understood as "brightness". the lower it is, the closer to black, the higher it is, the closer to white. CMYK Almost the same as RGB, representing the amount of each color used, it is just the primary colors here are different. C = Cyan, M = Magenta, Y = Yellow and somehow "K" is black. Usually, these codes are used by printing shops. - - - === < [ EXTRA ] > === - - - GIVING COLORS SHORTFORMS some times I like to do stuff like this, and this is what I have (if you also have a list of short forms for colors, comment them in the comment section below ~) Red = Red Ver = Vermillion Org = Orange Mrg = Marigold Ylw = Yellow Lme = Lime Chr = Chartreuse Grn = Green Aqr = Aquamarine Cyn = Cyan Tor = Torquise Blu = Blue Vio = Violet Prp = Purple Mgt = Magenta Pnk = Pink Brn = Brown Tan = Tan Wht = White Gry = Grey Blk = Black L. = Light D. = Dark

Finally, a new game to test your brain, in this case, this game tests your memory. Go give it a try ~

Hi, I am a new site editor of Memo2007Ultra Official Website. I am grateful to the Admin for letting me create my own page and share my creative ideas. Before I plan to create, I have requested a new Website/Page and it had been approved. This proves that I can edit the M2007U Official Website. Soon, a new Education page/site will be published, but I am not going to show you what we have yet, we will save this for the future~ 大家好，我是 M2007U 官网 的 编辑员，我非常感谢Admin能让我创造自己的网页来分享我的作品。在我开始之前，我有向Admin要求过关于建设新的网页，而且成功了。也就是说M2007U 官网 即将会有全新的课程网页。当然现在我是不会泄漏页面的内容，但是在未来就会发布咯！ Hi , I am the new of site editor in Memo 2007 Ultra who joined by invitation from Admin. I am very thank you to Admin let me create my own site to share my creative stuff. Before I plan to create, I have requested to Admin about the new Site and accepted by him. So I can proof I have permission to edit the site. Memo will release the new education site, but I'm not show what content of education, it will shown on the future. 你好，我是从Admin邀请来Memo 2007 Ultra新来的网页设计师。我非常感谢Admin能让我创造自家的网页来分享我的创业物。我开始之前，我有向Admin要求过关于新的网页。我能保证Admin允许我进入网页设计。所以，Memo即将增加全新的课程网页。虽然我是不会泄漏里面的东西，但未来就会开发哦！

Normally, we listen to music which is mostly (4,4) or (3,4) or something like (2n x 3,2n x 2) or (2n x 3, 2n x 4) and etc. What they have in common is these beats can be grouped into 4s or 3s or 2s. Say (4,4) :| 1,2,3,4 | or (3,4) : | 1,2,3 | or (6,8) : | [1,2,3],[4,5,6] | or (12,16) : | [1,2,3],[1,2,3],[1,2,3],[1,2,3] | In some special cases, some music uses different numbers but still can be grouped. Say (5,4), (7,4), (11,4), and so on. Here are some of the tips for mastering Weird rhythms: { 1 } Sub-Divide the rhythm can still be handled when the number is small enough, but when the numbers get bigger, counting to that number is exhausting, so you can try to subdivide the beats into groups. EG: (5,4) : 23 or 32 (7,4) : 43 or 34 or 232 (11,4) : 3332 or 443 etc. (19,4) : 3333322 or 757 { 2 } Practice Yup, practice is required, no free launch here. Hint: you can try to insert the notes into a DAW and listen to it, so you can have a slight idea of how does this rhythm feels. While inserting the notes, you can try setting the first notes in each subgroup to be accented. { 3 } Try using it It is possible that using the weird rhythm to compose a music piece is helpful. By the way, we have just created some tracks using odd signatures, like "the Fugue Rite of 2020" and "Pentamorphosis". (These 2 tracks will be released later, but if you are one of us, you can listen to the track via the music player.) If you have nothing to do for today, why not try doing this ?

Cryptography is what brings humans to discover a new world, where only teammates understand you, and your enemies are confused unless they know some of your rules. Cipher is a way to turn human-readable texts into gibberish to humans. The first Cipher took place in 100 BC and used by Julius Caesar, which is the "Caesar Cipher". Technology plays a vital role in the development of society. A knife is a knife, it can help cut ingredients in the kitchen, or a weapon to defend yourself or to harm others. Just like a knife, Technology is not entirely good or totally bad, it depends on how the user uses them. During WW2, the Germans used the Enigma Machine to send secret messages. What an Enigma Machine does is the connection of letters will change every time when a letter is encrypted. At that time, everyone thought that the Enigma Codes are impossible to be broken, even the Germans though so. But the Enigma Machine has a flaw. The Plugboard and the Reflector make sure that the Machine can encrypt and decrypt messages quickly, which is an advantage, thanks to these two parts, a letter can never be encrypted as itself. Alan Turing and his team built a Machine, based on this flaw, this Machine is the Bombe Machine. With this Masterpiece, nearly 14 million lives were saved and the war was shortened by around 2 years. Since the Enigma Machine cannot convert a Letter to itself, I thought to myself "what if I design a machine that a letter can be itself ?", and I did. And now, everyone can make their own secret messages by using the MultiFlex Enigma tool on the page: https://memo2007ultra.wixsite.com/memo2007ultra/academic-2017-computer-enigma

If speed is relative, then energy should be relative as well. Relativity Say you are in space with one of your friends. And what you see is the distance between you and your friend is decreasing. But which is true? A) You are moving towards your friend. B) Your friend is moving toward you. C) Both of you are moving toward each other. Here's another scenario say 3 friends are demonstrating relativity, Adam, Bob, and Celia. Adam is driving 10 m/s on the road. Bob is driving 8 m/s on the same road as Adam. Celia is Observing Adam and Bob beside the road. This is what they should see. Adam is leaving Celia with a speed of 10 m/s and leaving Bob with a speed of 2 m/s. Bob is lacking behind Adam with a speed of 2 m/s and leaving Celia with a speed of 8m/s When we are dealing with directions or locations, we need a reference point. If the distance between an object and the reference point is changing, then we know that the object is moving. In the scenario, the reference could be a rock on the ground or the Earth. Energy Energy is the ability to do work (Product of Force and Displacement). We know that the Kinetic Energy of an object is 0.5 x Mass x Velocity^2. Velocity is a vector, so it needs a reference point, it could be the earth or the sun. Say you are sitting in your room. Relative to the earth, you are not moving, therefore your velocity is 0m/s, meaning you have no Energy relative to the Earth. Relative to the sun, you are moving as the Earth is orbiting and rotating around the sun, therefore you have a certain velocity, meaning you have Energy relative to the Sun. So next time when you think that you have no energy... ; )

What is the meaning of being smart ? Remembering a lot of details or knowledge ? Doing well in school ? Getting straight As ? If you said "Yes, definitely, of course" or something like that, you are both correct and WRONG. There are 2 levels of being "SMART", one of them is the "CLASSICAL SMART", which we all know and parents wants them so badly, another one is the "CREATOR SMART", which is extremely rare in a way and they can be easily demolished if they are not cherished. Being "CLASSICAL SMART" in this case means they are good at academics and know how to score perfect grades. They are pretty good at following instructions and remember each steps and knowledge for their exams. There must be some "SMART KIDS" in the class who does extremely well, like he is the only one who passes the test. Problem is they only know what instructions to follow or what method to use, and they are stuck when there are no more tools available for them. [image : Doraemon - Kisumgmi] Being "CREATOR SMART" is not usually supported, obviously because that didn't help kids in their academics for most of the time, which most or some parents or teacher wants. But this kind of "SMARTNESS" opens new doors, invents new methods or sometimes a better solution to solve problems that cannot be solved before. Sometimes this kind of "ASSET" helps people to discover new topics , dimensions etc, so they can create something new from what they know or experience rather than taking materials only from exams and textbooks or reference books. [image : Hello Neighbour - Inventor] Being "CLASSICAL SMART" is like a machine, they accept commands and output a result, without any mistake. SMART KIDS go to class to accept knowledge and data for exams and the syllabus, and output great scores during exams, tests, finals etc. Being "CREATOR SMART" is like an inventor or a creator, who create new solutions or commands for machines, although they may not be academically smart. -----===== So, after reading this =====----- Do you thing that you are smart ?

One of the best games, MINECRAFT, is considered and published as a game. But the software may differ according to different users. Some of us uses MINECRAFT as an Interior or Architecture Design Software which is quick in Making concepts and available in 1st person view. When using some of the commands, maths are involved, this is a chance to connect game and education together. The Command "/fill" locates 2 corners of a cuboid and fill up the spaces or replaces some materials in the environment with the assigned block / material. eg: a command like "/fill 0 0 0 4 5 6 minecraft:oak_planks" will fill up the cuboid with a pair of oppositting corners with the coordinates 0, 0, 0, and 4, 5, 6, with oak planks. The "/fill" command only can deal with cuboids, when dealing with different shapes, this can be challenging because we will try to use the command in a way with the maximum efficiency. Say "which 2 corners should you choose when you want to fill up a pixeled circular area or a right triangular area". This is where Maths comes is, by using some geometric knowledge and some differentiation knowledge, we can discover the method with the highest efficiency. LEARN MORE : https://memo2007ultra.wixsite.com/memo2007ultra/e2016-aca-sci-mat-selftheory

If you think you have nice eyes, why not playing the new game we made ? You can find the Game within the Games 2010 page. Remember to share your scores ~

Inspired by Figures and Poker Cards, Xr.Shim started another Board Game : the Dynamic Platform This Game can be played in various ways, each with a main ability required such as: Responding Time, Strategies, Bets (so far) We managed to upload the Manual to this website, go check it out~

On the day 02 Mar 2020, OniShan (Evergreen 2034 / Dr.Shan) started a new genre in the team : 3D Model Martial Art Inspired by Martial Arts and Western Art, He designed a few characters, each with a specific Martial post. "I wasn't expecting 3D Models can be this elegant and dynamic, nice job.", said Xr.Shim. If there are enough photos or creations, there may be a new department.

What is the definition of "faster" ? This depends on the situation and the system. Say you are running on the x-axis, and your friend is running on the y-axis, you are faster along the x-axis but stationary along the y-axis, your friend is faster along the y-axis but stationary along the x-axis, so who is faster ? if the finish line is hidden ... As you can see the magnitude of velocity will be determined by situations and systems. So next time when you think you are fast, really ?