12-04-2025, 07:38 PM
(01-04-2025, 10:00 PM)Tee tiong huat Wrote: The FCC is much larger than the current large hadron collider. Europe's CERN laboratory said on Monday a detailed analysis revealed no technical obstacles to building the world's biggest particle collider, even as critics took issue with the "pharaonic" $17-billion project.
Earth's Rotational Pole Could Drift 27 Meters Between The Years 1900 And 2100. Earth's rotational pole is wandering humans are ultimately to blame. Greenland's ice sheet has an average thickness of 2.3 km(1.4 miles), holds 7% of world's freshwater, it's melting at worrying rate.
Glaciers in Greenland & Antarctica is doing just that. Antarctica is melting at an average rate of about 150 bil tons per year, while Greenland is losing about 270 bil tons per year, according to NASA. As billions of tons of water redistribute across globe, balance shifts, so does rotational pole. In a new study, two scientists from the Institute of Geodesy Photogrammetry in Zurich used satellite data to look at changes in polar motion since 1900, made forecasts of how it might alter by 2100 under optimistic pessimistic climate projections. They found rotational pole may drift by 27 meters (88 feet) by 2100, relative to its position in 1900, under pessimistic scenario in greenhouse gas emissions are not slashed & ice sheets melt at an increasingly furious rate.
Bear in mind rotational pole differs from the geographic poles & magnetic poles of planet Earth. Geographic pole is fixed reference point for maps navigation, representing long-term average position of rotational pole, while magnetic pole is where your compass needle points based where the planet’s magnetic field is strongest & points vertically downwards. Although different, the magnetic pole is also on move, albeit due to very different forces. Earth's magnetic poles are the result of molten iron & nickel sloshing around its outer core. These liquid metals are conductive & in constant motion due to planet's rotation, heat-driven convection. In tune with principles of electromagnetism, the movement creates electric currents, generate a magnetic field. Since 1830s, the north magnetic pole of Earth has drifted some 2,250 kilometers (1,400 miles) across the upper stretches of Northern Hemisphere from Canada towards Siberia. It’s not clear why is occurring exactly – after all not possible see beneath Earth’s crust – it’s likely to do with shifts in the oceans of liquid metal sit beneath our feet.

Study is published in journal Geophysical Research Letters.