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Est. 26.08.17 ·
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alpha2
과학 이야기 할겁니다!
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Generator using Quantum Entanglement (Probably Impossible)
Entangle two quantum particles. Create opposite spin states. Put one in a remote control-like device, and the other inside the generator. As the particles spin, they heat water. (????) The water turns into steam, which spins a turbine. If you want to stop it, click the remote to break the entanglement (??) Just a fantasy, sorry lol
2026.10.07 AM 12:54 · View Count 5
sjspace
Meteorology - Typhoon Noro, the 28th
Hurricane Nora, the 3rd Central Pacific Hurricane, which formed on September 23rd, has now crossed the International Date Line into the typhoon region today, becoming the 28th typhoon. - 9/10 Tropical disturbance formed off the coast of Mexico, moving west. - 9/23 Developed into a hurricane near Hawaii, moving west. - 10/5 Crossed the International Date Line. Assigned a typhoon number. - The typhoon name remains 'Noro' from its hurricane designation. - Subsequent typhoons are numbered sequentially and retain their names. * Central Pacific Hurricane Naming Convention - 4 sets of 12 names, totaling 48 names prepared. - All names are used sequentially. - 4-5 storms form in the Central Pacific annually. - Names do not reset to 'A' at the start of a new year. - Hawaiian names are used. - Words starting with A, E, H, I, K, L, M, N, O, P, U, W. - Hurricanes causing severe damage are retired, similar to typhoons.
2026.10.06 PM 6:24 · View Count 4
alpha2
Notice! Must Read!!!
I'm thinking of creating a board AI and doing a poll. We'll be operating it experimentally using coins, but it will proceed 99% as is. Since I won't be able to play the game for a while and earn coins, I'm planning to run it temporarily.
2026.10.06 PM 12:28 · View Count 2
sjspace
Astronomy - Asteroids (1)
In science class, you would have learned that celestial bodies smaller than planets, and not comets or meteoroids, are called asteroids. You would also have learned that most asteroids are located in the asteroid belt between Jupiter and Mars. However, they are not simply located between Mars and Jupiter; there are certain rules due to the influence of Jupiter's gravity. 1. Compositional Classification Classified spectroscopically by analyzing their spectra into: C-type (carbonaceous chondrite), S-type (silicaceous), and M-type (metallic). 2. Asteroid Families - Groups of asteroids that exhibit orbital resonance (where their orbital periods are in a simple integer ratio). (1) Trojan Asteroids - Share the same orbital period as Jupiter (1:1 orbital resonance). - Located at the Lagrange points (L4, L5), 60 degrees ahead or behind Jupiter in its orbit. - This pattern of asteroids exists from Venus to Neptune's orbit. - Their orbital period matches that of the influenced planet (1:1 orbital resonance). - Named after the Trojan War in Greek mythology due to their perfect balance of forces. - Representative asteroids are named after heroes of the Trojan War.
2026.10.06 AM 12:12 (Modified) · View Count 10
JYOONiii
Liquid That Climbs Over Cup Walls by Itself, 'Superfluid'
Liquid helium, cooled to extremely low temperatures (below -271°C), enters a state called 'Superfluid' where viscosity (friction) completely disappears. Because its viscosity is zero, when contained in a cup, the liquid inexplicably climbs up the inner walls of the cup and overflows. It can also pass through tiny holes without any friction. This is a prime example of the mysteries of physics, where the quantum mechanical properties of the microscopic world are directly observable in the macroscopic world.
2026.10.05 PM 3:18 · View Count 11
sjspace
Astronomy - Lagrange Points
To put it grandly, it's a special solution (an answer under specific conditions) to the three-body problem. It's a point of equilibrium between the absolute gravitational forces of two bodies (1 and 2). There are 5 such gravitational equilibrium points calculated: L1, L2, and L3 lie on the line connecting bodies 1 and 2, while L4 and L5 are at 60-degree positions on their orbital plane. 1) Applications - Observation Satellites: L1 is used for solar observation satellites, and L2 is where space telescopes (in Earth's shadow) are located. - Space Stations: L4 and L5 are the most stable among the Lagrange points, requiring less fuel, making them prime candidate locations for space stations. 2) Points Conducive to Asteroid Observation - In the solar system, the primary gravitational body is the Sun, and the secondary is Jupiter. - In the Lagrange points between them, a group called Trojans - a large number of asteroids have been discovered. - Their orbital period matches Jupiter's orbital period. - Trojans exist not only around Jupiter but also from Venus to Neptune (their orbital periods match the planets influencing them). - The number discovered is proportional to the gravitational strength.
2026.10.05 AM 1:28 · View Count 22
JYOONiii
Gallium, the Metal That Melts in Your Hand
There's an element that defies the common knowledge that metals are hard and only melt at high temperatures. It's 'Gallium (Ga)', element number 31. Gallium's melting point is about 29.76℃, which is lower than human body temperature (around 36.5℃). That's why if you place a solid piece of gallium on your palm, it instantly melts into a liquid due to your body heat. Gallium, which has low toxicity and is used in thermometers and semiconductor materials, is a prime example of the fascinating material properties chemistry can show.
2026.10.04 PM 3:34 · View Count 7
sjspace
Astronomy - Why Pluto Was Stripped of Its Planet Status
We used to think there were 9 planets in the solar system, but in 2006, Pluto was stripped of its planetary status and reclassified as a dwarf planet. At that time, new criteria for planets were established, which are as follows: 1) It must orbit the Sun. 2) It must have sufficient gravity to maintain a spherical shape. 3) It must have cleared the neighborhood around its orbit, meaning it's not significantly influenced by other celestial bodies. The reasons for Pluto's exclusion based on these criteria can be summarized as follows: 1) Lack of Orbital Dominance - Its orbit enters Neptune's path (elliptical orbit). - It has a 3:2 orbital resonance with Neptune. - Its orbit is somewhat inclined relative to the ecliptic plane. - These phenomena are interpreted as being influenced by Neptune's gravity. 2) Satellite Mass Too Large - The mass ratio between Pluto and its largest moon, Charon, is 8.5:1. - The barycenter (center of mass) of the Pluto-Charon system lies outside Pluto. - They are tidally locked and orbit each other every 6.4 days. 3) The Emergence of a 10th Planet? - The discovery of Eris, a celestial body of similar size to Pluto, in an orbit beyond Pluto's. - While discussions about a 10th planet took place, it was ultimately classified as a dwarf planet, similar to Pluto. - Additionally, several other existing asteroids were also reclassified as dwarf planets.
2026.10.03 PM 11:19 (Modified) · View Count 19
JYOONiii
The Planet Where Glass Rain Falls Sideways, HD 189733b
There's an exoplanet called 'HD 189733b' that, despite its beautiful blue hue reminiscent of Earth, harbors a bizarre environment. This planet appears blue not because of oceans, but due to silicate particles in its atmosphere. At temperatures exceeding 1,000 degrees Celsius, molten silicates turn into sharp glass particles. Add to this supersonic winds reaching 8,700 km/h, and you get a strange landscape where sharp glass rain violently pours horizontally.
2026.10.03 PM 6:37 · View Count 6
sjspace
Chemistry, Materials Science - Phase Transition
Phase: A state where a substance is uniform and distinctly separated. Physically, we mainly divide them into three phases (solid, liquid, gas), but in materials science, we even distinguish crystal structures. 1. Solid: Hard and resistant to deformation by external forces. 2. Liquid: A state with fluidity; its volume does not decrease when compressed. 3. Gas: A state that expands freely without a fixed volume. 4. Plasma: A phase where electrons and atomic nuclei are separated due to high energy. Phase Transition: The phenomenon where one phase changes into another. In materials science, solid crystal structures are classified into over 15 crystal phases depending on temperature and pressure conditions (diagram on the right). * Unusual Phase Transition Phenomena - Glass Transition Point: The temperature at which a hard solid, like glass, becomes soft like rubber upon heating, but without fluidity (plastic). - Liquid Crystal: Possesses the fluidity of a liquid but the crystallinity of a solid (only in specific substances). However, unlike solids with regular alignment in all three axes, alignment occurs in only one or two directions.
2026.10.03 AM 3:45 · View Count 16

