https://www.youngju.dev/blog 천천히 올바르게. AI Researcher & DevOps Engineer Youngju's tech blog. GPU/CUDA, LLM, MLOps, Kubernetes AI workloads, distributed training, and data engineering. ko fjvbn2003@gmail.com (Youngju Kim) fjvbn2003@gmail.com (Youngju Kim) Sun, 21 Jun 2026 00:00:00 GMT https://www.youngju.dev/blog/culture/2026-06-21-relativity-made-simple.en https://www.youngju.dev/blog/culture/2026-06-21-relativity-made-simple.en Starting from the constancy of light speed, on to time dilation, the link between mass and energy, and finally to general relativity, which says gravity is the curvature of spacetime. Following Einstein thought experiments, and confirming a bent universe through real evidence in GPS, black holes, and gravitational waves. Sun, 21 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) relativityphysicssciencespacetimegravityblack-holes https://www.youngju.dev/blog/culture/2026-06-21-relativity-made-simple.ja https://www.youngju.dev/blog/culture/2026-06-21-relativity-made-simple.ja 光速不変から出発し、時間の遅れ、質量とエネルギーの関係、そして重力は時空の曲がりだとする一般相対性理論まで。アインシュタインの思考実験をたどり、GPSやブラックホール、重力波という実際の証拠で確かめる、曲がった宇宙の物語。 Sun, 21 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) relativityphysicssciencespacetimegravityblack-holes https://www.youngju.dev/blog/culture/2026-06-21-relativity-made-simple https://www.youngju.dev/blog/culture/2026-06-21-relativity-made-simple 광속 불변에서 시작해 시간 지연, 질량과 에너지의 관계, 그리고 중력이 시공간의 곡률이라는 일반상대성이론까지. 아인슈타인의 사고실험을 따라가며, GPS와 블랙홀, 중력파라는 실제 증거로 확인하는 휘어진 우주 이야기. Sun, 21 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) relativityphysicssciencespacetimegravityblack-holes