분류 전체보기 (42) 썸네일형 리스트형 Riemann Zeta Function(리만 제타 함수) 보호되어 있는 글입니다. A Theory on the Grandfather Paradox The grandfather paradox The grandfather paradox is a pafradox about time travel that, what would happen if one were to travel back in time and kill his grandfather before the time travler's parants were born? The time traveler's father will not be born because his father, who has been killed, didn't had any children before. This leads to that the time travler himself cannotbe born. This is a par.. Relation between Time and Velocity in Special Relativity The theory of special relativity explains that time and length can be changed depending on the observer's speed. A few months ago, I have struggled with instantly coming out with the answers to easy science questions in special relativity - I had to calculate the change of time everytime I confronted that kind of problem. So I was wondering if there would be any easy and straightforward way of r.. Skyrmions - magnetic flowers blooming on spiral magnets As I was surfing the internet, I found an interesting image[image 4] - a hedgehog configuration of a skyrmion. I had been wondering about whether a one pole magnet can exist, warping a magnet's shape. The image seemed as if magnetic force pointed outward from the sphere. Skyrmions The concept of a skyrmion was proposed by Tony Skyrme as a model of the nucleon. Skyrmions are also found in spiral .. Moire Pattern(무아레 구조) What is it? A moire pattern is a superlattice(superpatern?) formed when overlaying similar patternson top of one another. The step of a new pattern is larger than or same as that of any of the original structures. This is related to the concept of least common multiple. Consider two patterns with step 2 and 3. Upon overlaying the two structures, a new pattern with a step of lcm(2,3)=6, will appe.. Starbursts(eye) Seeing brignt lights, for example a car headlight, in the dark sometimes makes me see strays of light spreading outwards from the light source. It looks similar with the image below, but much less. In my case, the 'rays' have changes in their direction, are much less brighter, and often disappear when observed from a different angle. I have decided to make several theories on why this phenomenon.. Li-Fi - Wireless communication using light The term Li-Fi(Light Fidelitly) was first introuduced by Harald Hass in 2011. It is a way of wireless communication that uses light pulses as a medium for transmitting data. Transition speed is much faster than that of regular Wi-Fi, and can theoretically reach up to 100Gb/s. Solar Panels Solar panels are essential to Li-Fi technology because it converts light into electricity. When light enters.. The Nothing Grinder(aka. The Trammel of Archimedes) A nothing grinder, aka the Trammel of Archimedes is an elipsograph; a tool for drawing elipses. In the gif file above, the shaft is moved in such a way that the end part outside the rectangular area trails an elipse. Proof) segment AP= a(long radius), segment BP= b(short radius), line PXY is perpendicular to line BX, AX when angle(PBX)= t, angle(PAY)= t segment PX= b*sin(t) segment AY= a*cos(t) .. 이전 1 2 3 4 5 6 다음
