foute slechte destructieve humort (john de mol) en geen humor (adolf hitler) zijn ook belangrijke kenmerken van akelige naargeestige foute slechte krengetjes, alle negatief genoemden hebben nauwelijks humor of die destructieve pesterige kutten hu mort (59 jaar levens - mensen ervaring zegt dat) .. de hysterische zenuwe charmant bedoelde nep lach van leeghoofd mark edith sschipperss kutte rutte en nsb - er gerrit mammonkanker zalm
Nvidia’s market cap will soar to $50 trillion—yes, trillion—says early investor in Amazon and Tesla
https://www.yahoo.com/finance/news/nvidia-market-cap-soar-50-180232830.html
Earth is wobbling and days are getting longer — and humans are to blame
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Earth's rotation as seen by NOAA's DSCVOER satellite in 2016. | Credit: NASA Goddard/NOAA/DSCOVER
The length of Earth's days and the orientation of our planet are being thrown out of balance as human-caused climate change continuously alters Earth's spin, new research suggests.
Initially, these changes will be imperceptible to us, but they could have serious knock-on effects, including forcing us to introduce negative leap seconds, interfering with space travel and altering our planet's inner core, researchers warn.
A day on Earth lasts about 86,400 seconds. But the exact time it takes our planet to complete a single rotation can shift by tiny fractions of milliseconds every year due to a number of factors, such as tectonic plate movements, changes to the inner core's rotation and gravitational tugging from the moon.
However, human-caused climate change is another factor that can alter the length of our days, and scientists are just starting to realize how much this will affect our planet's spin in the coming years.
Over the past few decades, the rate of ice loss from Earth's polar regions, particularly Greenland and Antarctica, has been increasing rapidly due to global warming, leading to rising sea levels. Most of this extra water accumulates near the equator, causing our planet to bulge slightly around the middle. This, in turn, slows the planet's spin because more weight is distributed farther away from the planet's center — similar to how spinning figure skaters slow down by moving their arms away from their bodies.
In the new study, published July 15 in the journal PNAS, researchers used an advanced artificial intelligence program that combines real-world data with the laws of physics to predict how the planet's spin will change over time.
Related: 15 unexpected effects of climate change
A photo of water pouring from a melting Arctic glacier
The results back up a similar study published in March, which suggested that Earth's days will get longer in the future. However, the new program offered much more precise estimates of how days will lengthen over time.
The same research team behind the new paper also released another study, published July 12 in the journal Nature Geoscience, which showed that the increased water near the equator is moving Earth's axis of rotation. This is making the magnetic poles wobble farther away from the axis every year.
Scientists previously found that this effect has likely been happening for at least the past three decades. However, the new study suggests the axis will move even farther from its current position than previous studies predicted.
"We humans have a greater impact on our planet than we realise," Benedikt Soja, a geodesist at ETH Zurich in Switzerland who was a co-author on both the new studies, said in a statement. "And this naturally places great responsibility on us for the future of our planet."
Looped video footage of Earth spinning and the magnetic poles moving in relation to the planet's spin axis
Spinning slower
Earth's days have always varied in length. Around 1 billion years ago, our planet likely took only 19 hours to complete a single rotation, before slowing to the 24 hours we experience today.
It also changes on shorter timescales. For example, in 2020, Earth was spinning more quickly than at any point since records began in 1960. In 2021, the planet's rotation began to slow down again even though we experienced the shortest-ever recorded day in June 2022.
But in general, Earth's rotation has been slowing for millennia, mainly due to a process known as lunar tidal friction, in which the moon's gravitational effect on our oceans pulls water away from the poles. At the moment, this effect is lengthening our days by around 2.3 milliseconds every century.
The new studies show that climate change is currently lengthening our days by around 1.3 milliseconds every century. However, based on current global temperature models, the researchers predict that this could increase to 2.6 milliseconds per century by the end of the 21st century, which would make climate change the biggest influence on our planet's spin.
Potential impacts
Spiral
One of the most likely effects of longer days would be the need to introduce negative leap seconds — where we'd occasionally lose a second from some future days to accommodate the lengthening days, similar to how leap years work.
The March study suggests that this may need to start happening as soon as 2029, mainly to accommodate for how much the days have already lengthened over the past few millennia.
In the past, scientists have suggested this introduction could mess with the timekeeping of computers and smartphones. However, not everyone is convinced this will be a major issue.
The researchers of the new studies also noted that future changes could impact space travel.
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"Even if the Earth's rotation is changing only slowly, this effect has to be taken into account when navigating in space — for example, when sending a space probe to land on another planet," Soja said. It is therefore important to monitor these changes closely, he added.
The team also warned that the changes to Earth's rotational axis could alter the rotation of Earth's inner core, which could further increase how fast days lengthen. However, this potential interaction is still largely unknown.
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Gisteren het slot van de film holy spider gezien, in gedeeltes gezien want het is een akelige film over een man in Teheran die vrouwen van lichte zeden, "onzuivere vrouwen", van de straat oppikt en ze daarna op gruwelijke wijze wurgt. Dat deed hij met 16 vrouwen en bij zijn veroordeling vond hij nog dat hij het enige juiste had gedaan en zijn vrouw en zoon van 9 jaar vonden dat ook, de zoon wilde hem wel opvolgen en andere "onzuivere vrouwen" ook zo wurgen (nooit gezien, zijn pa vertelde het trots aan hem). Ook stonden er allemaal vrouwen en mannen voor het gerechtsgebouw dat hij vrij moest komen en niet veroordeeld mocht worden, hij had het juiste gedaan.
Het is maar een film, maar gebaseerd op een waar verhaal. In Engeland had je jack the ripper die hetzelfde deed, geloof ik .. en ik ken (vaak of altijd gelovige) mannen die zo denken, kotsen. De "onmensen" wereld.
Vandaag een half uur op het strand gelegen, langer hou ik niet vol, dacht ik benauwd (met Suzanne in gedachten) .. met een boek of iPhone wel .. en ik vond een uur langs het strand wandelen, "pootje baden" wel leuk. Op niet wiet, niet psy truffel - paddestoel, niet salvia divinorum dagen, zoals vandaag, voel ik me minder top, meer somber over de wereld en kom ik meer lawaai makende gekken tegen. Toch blijf ik het zo doen, vind het goed. En wat vind ik het goed dat ik het wiel of de brug nu zo goed kan, beter dan ooit, met yoga. Ik word nooit zo goed als Julia Gradeler of Leonie Slond, maar dat geeft niet, voel me 40 jaar en top fit ! Met dansen zal ik nooit kunnen wat echte dansers kunnen, maar dat geeft ook niet, ik kan beter dansen dan ooit .. en dat wil ik, al dat gereutel en gezeik en negativiteit van me af dansen (af en toe, 2 uur per week). In Marokko zag ik een jongen en hij ging op zijn handen staan en de 4 treden van een trap bij het zwembad op en af lopen ! Zal ik nooit kunnen, maar ik vind het leuk om 1 minuut of langer op mijn handen tegen een muur te staan, werkt ook erg goed tegen somberheid en veel yoga houdingen werken ook goed tegen je slecht of ongezond voelen, ook daar doe ik het voor.
En gisteren, woensdag, weer 3 uur "top"sport met instructeur David, minder spierpijn dan vorige week.
Natalia ãï :
This city does not exist, invented by Natalia & ãïT
gniffelgniffelgnuifnuifgerrit, als je je omdraait draai ik achter je rug een pirouette met in elk oor een sigarette en dan schater ik inwendig van de prette
Geplaatst door: Gerrit Komrij | 30 juni 2009 om 00:57
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