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What is the theory of relativity? The theory of relativity is a physical theory of time and space established by Albert Einstein, and is largely divided into two: the special theory of relativity and the general theory of relativity[. Special theory of relativity (published in 1905)The laws of physics apply equally in all inertial frames (coordinate systems moving at a constant speed).The speed of light is always constant for al.. 2025. 7. 22.
Byun-jeok-tong (變則通) Tong-jeok-byeon (通則變) Byun-jeok-tong (變則通) Tong-jeok-byeon (通則變) is an idiom meaning "If you change, you won't be blocked, and if you aren't blocked, you will change". Simply put, it contains the meaning that you can develop only if you constantly change and communicate according to the situation. If we break it down in more detail, it is as follows:● Byun (變): change, become different, innovate● That is (則): soon, i.. 2025. 7. 22.
What kind of animals were dinosaurs? Dinosaurs were various types of reptiles that ruled the Earth during the Mesozoic Era, from about 230 million years ago to 66 million years ago. As the name "terrifying lizard" suggests, there were dinosaurs that boasted huge bodies and great strength, but there were also small and agile dinosaurs. How is the dinosaur era divided?The Mesozoic Era, when dinosaurs lived, is largely divided into th.. 2025. 7. 22.
Grit Grit is a psychological term that refers to passion and persistence toward a long-term goal. It emphasizes that, rather than simple talent or IQ, the attitude of consistently working toward a goal without giving up for a long time is an important factor in determining success. Angela Duckworth, a leading researcher on grit, defines grit as “perseverance and passion for long-term goals” and expla.. 2025. 7. 21.
일본 온천 여행 일본은 전국에 3,000곳이 넘는 온천지가 있을 정도로 온천 문화가 발달해 있습니다. 온천은 단순한 목욕이 아니라, 자연 경관과 전통적인 료칸(여관) 체험, 지역별 특색 있는 온천수, 그리고 힐링과 치유의 여행지로 인기가 많습니다. 대표적인 일본 온천 여행지지역특징 및 추천 포인트접근성하코네도쿄 근교, 자연 경관과 프라이빗 료칸, 후지산 전망 가능도쿄에서 약 1시간 30분노보리베츠홋카이도 대표 온천, 유황 냄새와 지옥계곡, 다양한 온천수삿포로에서 약 1시간 20분유후인후쿠오카 근교, 가족 여행에 적합, 자연 경관과 상점가, 미술관후쿠오카에서 차로 약 2시간아리마온천오사카·고베 근교, 일본 3대 온천, 1,300년 역사, 금탕·은탕오사카에서 약 1시간키노사키온천오사카 근교, 온천 순례(7개 소토유), 일본.. 2025. 7. 21.
What is Janghwa-hongryeon? Janghwa-hongryeon (薔花紅蓮) is a representative classical novel handed down from the Joseon Dynasty and a representative traditional Korean tale. The story's core is the conflict and tragedy between a stepmother and her children from her previous marriage, and the resulting resentment and revenge. Plot Summary • Bae Mu-ryong (or Bae Jwa-su), who lived in Cheolsan, Pyeongan Province, had two daught.. 2025. 7. 20.

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