Category Archives: Web & Technology

Web & Technology

Largest dark energy map could reveal the fate of the universe | Live Science

This is one big map

By Tom Metcalfe, published 1 day ago

Star trails are seen over the Nicholas U. Mayall 4-meter Telescope on Kitt Peak National Observatory near Tucson, Arizona. (Image credit: KPNO/NOIRLab/NSF/AURA/P. Marenfeld)

A modified telescope in Arizona has produced an interim map, which is already the largest three-dimensional map of the universe ever — and the instrument is only about a tenth of the way through its five-year mission.

The Dark Energy Spectroscopic Instrument (DESI), a collaboration between Lawrence Berkeley National Laboratory in California and scientists around the world, was installed between 2015 and 2019 on the Mayall telescope at the Kitt Peak National Observatory in the Sonoran Desert, about 50 miles (88 kilometers) west of Tucson, and has been conducting a survey for less than a year.

Its purpose is to create an even larger 3D map of the universe, to yield a better understanding of the physics of dark energy, the mysterious force that is accelerating the expansion of the universe.

Source: Largest dark energy map could reveal the fate of the universe | Live Science

New to the Digital Collections: Dun & Bradstreet | Inside Adams: Science, Technology & Business | Library of Congress

January 10, 2022 by Natalie Burclaff

Cover page of the Reference Book. July 1901, volume 133. R.G. Dun & Company. Library of Congress Digital Collections.

The Science, Technology & Business Division is excited to announce the digital collection of Dun’s Reference Book from 1900 to 1924!

In the Business Reference Section, about 20% of the questions we receive are related to locating information on historical businesses. We use a lot of resources to answer these questions: historical newspapers, city directories and telephone books, industry lists, and insurance maps. One useful resource in our tool belt is the Dun & Bradstreet Reference Book, a credit directory, which is why we are thrilled that the volumes from 1900 to 1924 are now available online!

For those who are unfamiliar with this title, it was published starting in 1859 by the Mercantile Agency, part of R.G. Dun & Company. Dun merged with Bradstreet in 1933 and they continued producing these volumes until 2006.

Unlike other kinds of directories, which are often focused on a particular metropolitan area or type of industry, Dun’s Reference Book collection has national coverage and includes “merchants, manufacturers, and traders” in a wide range of industries from the largest cities to the smallest towns across the United States and Canada.

Source: New to the Digital Collections: Dun & Bradstreet | Inside Adams: Science, Technology & Business

Opinion | The golden age of public libraries dawns again – The Washington Post

By Editorial Board, Yesterday, 1/1/2021, at 8:00 a.m. EST

The Deichman Bjørvika library in Oslo has six floors held up by three towers, leaving an open atrium at the building’s center. It was named public library of the year in 2021. (Sigrid Harms/picture alliance via Getty Images)

As the world enters 2022, public libraries are emerging as one of the bright spots — literally.

An abundance of new and newly renovated libraries have opened their doors in the past two years.

In addition to being breathtakingly beautiful, many are exemplars of what great community spaces can and should be.

Indoors, they are filled with natural light. Books once packed together in dark corners are now on display on bright, welcoming shelves that could rival those in an Apple store.

Some libraries have added outdoor patios and roof decks.

Source: Opinion | The golden age of public libraries dawns again – The Washington Post

James Webb Space Telescope: Looking back in time to catch the earliest starlight in creation – 60 Minutes – CBS News

By Scott Pelley December 12, 2021 / 7:59 PM / CBS News

https://www.cbsnews.com/video/james-webb-space-telescope-60-minutes-video-2021-12-12/

The James Webb Space Telescope

This December 22, may become known as the day the universe changed.

That Wednesday, NASA expects to launch the James Webb Space Telescope, the largest and most expensive instrument ever flown.

One hundred times more powerful than the 31-year-old Hubble Telescope, Webb can see back in time all the way to the “let there be light” moment—that instant when a cold, dark universe ignited into stars.

Scott Pelley: Wow. Well, somehow, that’s a lot bigger than I imagined. Amy Lo: She’s a big one.

Source: James Webb Space Telescope: Looking back in time to catch the earliest starlight in creation – 60 Minutes – CBS News

Parents of the social media generation are not OK – CNN

By Samantha Murphy Kelly, CNN Business
Video by John General, Janelle Gonzalez & Sofia Barrett, CNN Business

Updated 7:16 AM ET, Wed December 8, 2021

Sabine Polak is one of many concerned parents who are struggling to navigate social media’s impact on their children’s mental health.

(CNN Business) Last September, just a few weeks into the school year, Sabine Polak got a call from the guidance counselor. Her 14-year-old daughter was struggling with depression and had contemplated suicide.

“I was completely floored,” said Polak, 45, who lives in Valley Forge, Pennsylvania. “I had no clue she was even feeling remotely down at all. When I asked her about it, she just kept saying she wanted to get away from it all … but I didn’t know what that meant.”

Instagram will now tell users when to take a break from using the app After taking her to a crisis center, which banned phone use for anyone checking in, Polak learned from her daughter that the pressures of social media were driving her increased anxiety. The main source of stress: waiting for her friends to open and respond to messages and photos on Snapchat.

Source: Parents of the social media generation are not OK – CNN

Measuring Distances in Cosmology – Explaining Science

By Steve Hurley, Posted on

From article…

I have recently written an article for my local amateur astronomical society about distance measurements in cosmology. There is a lot of confusion about what we mean by “distance” on the vast such scales and the article was written to help clear up of these misunderstandings. It is an expanded version of a shorter blog post I wrote on this topic in early 2021. As I thought it might be of interest to many of my readers, I have published it here.

Source: Measuring Distances in Cosmology – Explaining Science