#spectroscopes

[blasteffect]

DESI Map !

A slice of the 3D map of galaxies collected in the first year of the Dark Energy Spectroscopic Instrument (DESI) Survey. Earth is at the tip, with the furthest galaxies plotted at distances of 11 billion light-years. Each point represents one galaxy.

This version of the DESI map includes 600,000 galaxies — less than 0.1% of the survey's full volume.

Credit: DESI Collaboration/NOIRLab/NSF/AURA/R. Proctor

#art #cosmos #cosmic #universe #blast #space #wallpaper #desi map #3D map #galaxies #galaxy #dark energy spectroscopic instrument #survey #NOIRlab

[planetaryalphabet]

fille_delespace explains the latest results from DESI (Dark Energy Spectroscopic Instrument). I’m not sure I understand it all but I love her enthusiasm.

#fille_delespace #dark matter #Dark Energy Spectroscopic Instrument #galaxy #universe #Instagram

[warningsine]

The biggest ever 3D map of the universe, featuring more than 6m galaxies, has been revealed by scientists who said it raised questions about the nature of dark energy and the future of the universe.

The map is based on data collected by the Dark Energy Spectroscopic Instrument (Desi) in Arizona and contains three times as many galaxies as previous efforts, with many having their distances measured for the first time.

Researchers said that by using this map, they have been able measure how fast the universe has been expanding at different times in the past with unprecedented accuracy.

The results confirm that the expansion of the universe is speeding up, they added. However, the findings have also raised the tantalising possibility that dark energy – a mysterious, repulsive force that drives the process – is not constant throughout time as has previously been suggested.

Dr Seshadri Nadathur, a co-author of the work and senior research fellow at the University of Portsmouth’s Institute of Cosmology and Gravitation, said: “What we are seeing are some hints that it has actually been changing over time, which is quite exciting because it is not what the standard model of a cosmological constant dark energy would look like.”

Prof Carlos Frenk, from Durham University and a co-author of the research, said that if dark energy was indeed constant in time, the future of the universe was simple: it would expand on and on, for ever. But if the hints found in the map stood up, that would be called into question.

“Now all of that goes out the window and essentially we have to start from scratch, and that means revising our understanding of basic physics, our understanding of the big bang itself, and our understanding of the long-range forecast for the universe,” he said, adding that the new hints left open the possibility that the universe might undergo a “big crunch”.

The research, which has been published in a series of preprints – meaning it has yet to be peer-reviewed – reveals how the team first created the 3D map, then measured patterns in the distribution of galaxies that relate to sound waves that occurred in the early universe, known as baryon acoustic oscillations.

As the size of these patterns is known to be regular, the team was able to calibrate the distances to different galaxies in the map, allowing them to work out how fast the universe has been growing over the last 11bn years, with a precision better than 0.5% over all times, and better than 1% between 8bn and 11bn years ago.

Frenk said the precision itself of the measurements was notable given that galaxies could be billions of light years away, and billions of years old. “It’s mind-boggling that we can measure anything to a precision of 1%, which is precision you get in the laboratory in physics for high-precision measurements,” he said.

Andrew Pontzen, professor of cosmology at University College London and author of the book The Universe in a Box, who was not involved in the work, said Desi was one of a slew of exciting new astronomical surveys cataloguing the night sky, with one of the primary goals being to measure the rate at which our expanding universe has speeded up.

“Like measuring the acceleration of a car, charting the universe’s expansion tells us about the ‘engine’ powering cosmic acceleration. That engine is known as dark energy,” he said.

However, Pontzen noted that our knowledge of how dark energy operates was limited. “The new data, when combined with existing measurements, would seem to contradict the simplest possible explanations for dark energy,” he said.

“At face value, that’s an exciting step forward. But as the team themselves caution, there is a huge amount still to understand about this data and early results should be taken with a healthy grain of salt.”

#space #astronomy #physics #arizona #us #3d map #Dark Energy Spectroscopic Instrument #news tag

[sklogw]

real neri sklogw fans will remember that i said this would happen months ago

#astro-ph #i literally said that spectroscopic stellar mass measurements would show that the initial estimates were waaay overestimated

[astralcurses]

shuffle your favorite playlist and post the first five songs that come up. then copy/paste this ask to your favorite mutuals <3 (no pressure ofc)

this is my catch all playlist with 161 songs and all of these are certified banger. got some WILD genre jumps though

#asks #aster.txt #spectroscopic gayety #TY FOR THE ASK POOKIE

[wizardfvcker]

the thing is that im looking at all these masters degrees subjects and im like. i dont think i could pass any of these & also if i have to look at materials science ever again i might die

#.txt #WHY ARE THERE SOOO MANY SUBJECTS RELATED TO SPECTROSCOPIC ORGANIC DETERMINATION #STOP ITT #im going to **** ****** #god i shouldve studied maths or computer science

[redpenship]

For your hypothetical moral questions.

For A, I would take the knife of the other dude if they’re not awake yet. Thus they can’t escape. If they are awake, I will tell them that I’m going to get help because I am already unbound and ask to take their knife with me. The puzzle description never says that they know the rules of the puzzle. If they refuse to give up the knife, I explain the puzzle and say that I have a plan that will get them out later. If they still don’t like me at this point they’ve probably already cut themselves free, stabbed me and escaped.

For B, It depends on two factors:

1. Is the person from earth/familiar with international signs/gestures?

2. Is the memo that explains the rules on a physical piece of paper or thing I can point to?

If they are from earth and I can hold or point to the memo, I would point to my memo, and then point to theirs. I would repeat several times to make the point that we have the same memo. Then, I would make a peace sign with my hand while dropping the knife. The peace sign would signify no violence from my end. Hopefully they are smart enough to do the same, and we go free.

If they are not from earth but there is a physical piece of paper, I would point to their paper and then mine so that they get that they say the same thing. Then I will flop over pathetically and throw away the knife to signify a lack of aggression. If they toss their knife too, we go free.

If they know the peace sign and there is no physical memo, I would point to me, do the peace sign, point to them, do the peace sign, repeat as I slowly put the knife down and kick it away. I repeat until I peer pressure them into mimicking me. Freedom.

If they don’t know earth culture, and there is no physical memo, I would slowly set down the knife, kick it away, and then sit down as casually as possible. Slow blink at ‘em like a cat. Hopefully they get the idea?

I love these answers, thank you so much! I think you're the first person to make the same choices as the character in the fic <3

#spectroscopic-gayety #oh i hope this was okay to post #if not tell me to delete!!!

[wigglepiggle]

I have two characters i made for a hfjone au, and their plot is basically the mr hand stuff during ppt2 but hfjone. I never even saw ppt2. How. HOW ARE THEY SO SIMILAR

I HAVE NO IDEA

I FEEL LIKE I SORT OF DID THIS WITH 2 OF MY OCS TOO BUT I THINK I CHANGED IT A LITTLE AFTER WATCHING PPT2 BECAUSE I WAS LIKE "SHIT THATS SORTA SIMILAR-"

#i cannot remember who those ocs where ARRG #it was either spectroscope and bar or the flower guy (unnamed) and bar

[whisperingzeltus]

Just for you mutual I will proceed reblog nothing but space again /lh

#Di’s rambling #I FEAR NOT THE VASTNESS OF SPACE #Spaces takes up my brain so often you have no idea #I live space I love celestial bodies I love theories and phenomena and the environments of other planets and And AND #Ohh have I spoken about the planet that rains glass? #IT RAINS MOLTEN GLASS HORIZONTALLY #AND it was one of the first two planets to be spectroscopically observed #HD 189733 b by the way~!

[spacenutspod]

Embark on an astronomical odyssey with SpaceTime Series 27 Episode 48, as we unveil the most detailed view of the expanding universe to date. The first-year data from DESI, the Dark Energy Spectroscopic Instrument survey, is in, and it's changing the cosmic game. This groundbreaking five-year study is mapping the universe in 3D, charting the enigmatic influence of dark energy over time. Will the universe meet a chilling big freeze, or will dark energy's relentless acceleration lead to a catastrophic big rip? With precision better than 1%, DESI's data is painting a complex picture of our cosmic destiny. Then, join us in celebrating a celestial milestone as the Solar Observatory spacecraft SOHO captures its 5000th comet. SOHO's unexpected role as a prolific comet hunter has deepened our understanding of these enigmatic sun-grazers, offering insights into the sun's atmosphere and the large-scale structure of comets. Plus, we follow the Soyuz MS-24 capsule's return to Earth, bringing home a NASA astronaut and the first Belarusian cosmonaut after a landmark mission. With blue skies over Kazakhstan, the Soyuz's journey from the International Space Station to the steppe marks a successful conclusion to an expedition of cosmic proportions. And don't miss our Science Report, where we delve into the impact of climate change on wine regions, the link between mood disorders and driving in young people, and the debate over a meteor impact ejecta potentially being alien technology. For more SpaceTime and to support the show, visit our website at https://spacetimewithstuartgary.com. Tune in to SpaceTime on your favorite podcast app with our universal listen link: https://spacetimewithstuartgary.com/listen, and access show links via https://linktr.ee/biteszHQ. Support the show: https://www.spreaker.com/podcast/spacetime-with-stuart-gary--2458531/support. This episode of SpaceTime is brought to you by NordPass. Secure your digital life and keep the cosmic exploration going with the password manager you can trust. Visit www.bitesz.com/nordpass for a special offer.

#acoustic #bang #baryonic #big #comet #cosmic #dark #discoveries #energy #expansion #grazing #instrument #oscillations #quasars #redshift #soho #spectroscopic #sun #universe #web

[gauricmi]

Synthesis and Characterization of Methyl Myristate: A Chemical Perspective

Synthesizing Methyl Myristate involves a series of chemical reactions that transform starting materials into this valuable ester. The process typically begins with the esterification of myristic acid with methanol, resulting in the formation of Methyl Myristate. This reaction, catalyzed by an acid or base, proceeds under controlled conditions to yield the desired product. Methyl Myristate, once synthesized, undergoes thorough characterization to confirm its purity, identity, and chemical properties.

Characterization of Methyl Myristate involves a comprehensive analysis of its physical and chemical attributes. Techniques such as chromatography, spectroscopy, and mass spectrometry are commonly employed to elucidate its molecular structure, determine its purity, and identify any impurities present. Gas chromatography, in particular, is widely used to quantify the percentage of Methyl Myristate in a sample and assess the efficiency of the synthesis process.

The molecular structure of Methyl Myristate is elucidated through spectroscopic techniques such as infrared (IR) spectroscopy and nuclear magnetic resonance (NMR) spectroscopy. These methods provide valuable insights into the functional groups present in the molecule and confirm its identity based on characteristic spectral peaks. By comparing experimental spectra with reference data, researchers can verify the successful synthesis of Methyl Myristate and ensure its quality for further applications.

In addition to structural analysis, characterization of Methyl Myristate includes the determination of its physical properties, such as melting point, boiling point, and density. These parameters provide valuable information about the compound's behavior under different conditions and its suitability for various applications. For example, the melting point of Methyl Myristate influences its solidification temperature in cosmetic formulations, while its density affects its solubility and compatibility with other ingredients. Get More Insights On This Topic: Methyl Myristate

#Methyl Myristate #Chemical Synthesis #Esterification #Spectroscopic Analysis #Physical Properties #Chemical Characterization #Industrial Applications #Cosmetic Ingredients

[cmibloggers]

Global Molecular Spectroscopy Market Is Estimated To Witness High Growth Owing To Rising Demand for Advanced Testing Techniques

The global Molecular Spectroscopy Market is estimated to be valued at US$ 2,640.7 Mn in 2021 and is expected to exhibit a CAGR of 4.2% over the forecast period 2022-2030, as highlighted in a new report published by Coherent Market Insights.

A) Market Overview:

Molecular spectroscopy involves the interaction of electromagnetic radiation with matter to study the molecular structure and analyze the chemical composition of substances. It provides valuable insights into the physical and chemical properties of molecules, making it a vital tool in various industries such as pharmaceuticals, biotechnology, food and beverages, and environmental testing. The market is driven by the increasing demand for advanced testing techniques, especially in the pharmaceutical industry. Molecular spectroscopy enables rapid and accurate analysis of drug compounds, helping in quality control and development processes. Moreover, the growing focus on research and development activities in the healthcare sector further fuels the market growth.

B) Market Key Trends:

One key trend in the global Molecular Spectroscopy Market is the increasing adoption of handheld and portable spectroscopy devices. These devices offer convenience and flexibility in testing and analysis, allowing users to perform on-site measurements and reduce dependence on laboratory-based systems. For instance, portable Raman spectroscopy devices are widely used for drug identification and counterfeit detection, making them valuable tools in pharmaceutical supply chain management. The adoption of compact and user-friendly spectroscopy devices is expected to drive market growth during the forecast period.

C) PEST Analysis:

- Political: Government regulations regarding the use and disposal of hazardous chemicals may impact the market growth. Compliance with environmental regulations and safety standards is crucial for companies operating in the molecular spectroscopy market.

- Economic: The growing investments in research and development activities by pharmaceutical and biotechnology companies contribute to market growth. Moreover, the increasing healthcare expenditure and the demand for advanced testing techniques drive market growth.

- Social: The rising awareness about the need for quality control and safety in various industries fuels the demand for molecular spectroscopy solutions. Additionally, the increasing focus on personalized medicine and precision diagnostics further drives market growth.

- Technological: Advancements in spectroscopy technologies, such as the integration of artificial intelligence and machine learning algorithms, enable faster and more accurate analysis. Furthermore, the development of miniaturized and portable spectroscopy devices expands the application areas of molecular spectroscopy.

D) Key Takeaways:

Paragraph 1: The global Molecular Spectroscopy Market is expected to witness high growth, exhibiting a CAGR of 4.2% over the forecast period, due to increasing demand for advanced testing techniques. Molecular spectroscopy plays a crucial role in ensuring quality control and safety in various industries, especially in pharmaceuticals and biotechnology.

Paragraph 2: In terms of regional analysis, North America is expected to dominate the Molecular Spectroscopy Market. The region has a strong presence of pharmaceutical and biotechnology companies, along with extensive research and development activities. Moreover, Asia Pacific is the fastest-growing region, owing to the increasing investments in healthcare infrastructure and the growing focus on research and development.

Paragraph 3: Key players operating in the global Molecular Spectroscopy Market include Thorlabs Inc., VIAVI Solutions Inc., Keit Ltd., ABB Ltd., PerkinElmer Inc., Shimadzu Corporation, Horiba Ltd., Jeol Ltd., Jasco Inc., Danaher Corporation, Merck KgaA, Bruker Corporation, Agilent Technologies, Waters Corporation, Bio-Rad Laboratories Inc., Magritek Ltd., Thermo Fischer Scientific Inc., and Buck Scientific Instrument Manufacturing Company. These players focus on strategic collaborations, product launches, and technological advancements to enhance their market position.

In conclusion, the global Molecular Spectroscopy Market is projected to experience significant growth due to the increasing demand for advanced testing techniques in various industries. The market's key trends include the adoption of handheld and portable spectroscopy devices, while the PEST analysis highlights the impact of political, economic, social, and technological factors. The key takeaways emphasize the market's size, regional analysis, and key players operating in the industry.

#Coherent Market Insights #Medical Imaging #Molecular Spectroscopy Market #Healthcare Industry #Spectroscopic Techniques #Absorption Spectroscopy

[jppres]

Quantification and in vitro photo-protective studies of phenolic compounds from Baccharis papillosa Rusby

Image: Pl@ntNet Article published in J. Pharm. Pharmacogn. Res., vol. 11, no. 1, pp. 33-46, January-February 2023. DOI: https://doi.org/10.56499/jppres22.1477_11.1.33 Alberto Calle1#, Cecilia K. Curi-Borda1#, Cervando Gutiérrez1,2, Lily Salcedo1, Yonny Flores1, Giovanna R. Almanza1* 1Laboratorio de Bioorgánica, Instituto de Investigaciones Químicas (IIQ), Facultad de Ciencias Puras y…

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#Broad Spectrum Index (BSI) #cinnamic acid derivative #Flavonoids #photo-protective activity #Spectroscopic Sun Protection Factor (SSPF)

[teachersource]

Joseph von Fraunhofer was born on March 6, 1787. A German physicist and optical lens manufacturer. He made optical glass, an achromatic telescope, and objective lenses. He also invented the spectroscope and developed diffraction grating. In 1814, he discovered and studied the dark absorption lines in the spectrum of the sun now known as Fraunhofer lines. Fraunhofer produced various optical instruments for his firm. This included the Fraunhofer Dorpat Refractor used by Struve (delivered 1824 to Dorpat Observatory), and the Bessel Heliometer (delivered posthumously), which were both used to collect data for stellar parallax.

#joseph von fraunhofer #inventors #spectroscope #diffraction grating #spectra #physics #optics #light #science #science history #science birthdays #on this day #on this day in science history

[fvjrbnlkmb]

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[quxel5swpmio]

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