#stock photos
How Do Fireworks Get Their Colors? It’s Element-ary!
Those beautiful explosions in the sky that take our breath away are powered by chemistry. Fireworks display different colors due to the various kinds of materials packed inside them. For example, the image above shows positive results of flame tests for various chemical elements. A flame test is an analytic procedure used in chemistry to detect the presence of certain elements, primarily metal ions, based on each element’s characteristic emission spectrum.
Click here to see more Flame Test images
When certain metals are heated, their electrons momentarily jump to a higher energy level. When these electrons settle back down to their original energy level, the cooling process emits a photon. Depending on the material, the photon will have a different wavelength and, therefor, will emit a different color. The flame colors vary for different elements and can be used to identify unknown substances. The ones shown above are (from left to right): copper (green), lithium (red), strontium (red), sodium (yellow), copper (green), and potassium (lilac).
Images above © SPL / Science Source
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Image JC3202 (Neutrophil Ingesting MRSA Bacteria)
Colorized scanning electron micrograph of Neutrophil white blood cells (light orange) ingesting Methicillin-Resistant Staphylococcus Aureus bacteria (deep red).
Methicillin-Resistant Staphylococcus Aureus (MRSA), also called multidrug-resistant staphylococcus aureus and oxacillin-resistant staphylococcus aureus (ORSA). This bacterium is responsible for several difficult-to-treat infections in humans.
MRSA is any strain of Staphylococcus aureus that has developed resistance to beta-lactam antibiotics, like penicillins and cephalosporins. Strains unable to resist these antibiotics are classified as methicillin-sensitive Staphylococcus aureus, or MSSA.
MRSA is especially troublesome in hospitals and nursing homes, where patients with open wounds, invasive devices, and weakened immune systems are at greater risk of infection than the general public. If not treated quickly, MRSA infections can cause sepsis and death.
It is usually spread by direct contact with an infected wound or from contaminated hands, usually those of healthcare providers. Also, people who carry MRSA but do not have signs of infection can spread the bacteria to others.
The only way to know if MRSA is the cause of an infection is to perform a laboratory culture of the bacteria. Obtaining bacteria to culture is a procedure done by a doctor or nurse.
© NIAID / Science Source
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Because Bees Don’t Have Pockets
The pollen basket or Corbicula (plural corbiculae) is part of the tibia on the hind legs of certain species of bees. They use the structure in harvesting pollen and returning it to the nest or hive. Bees in four tribes of the family Apidae, subfamily Apinae: the honey bees, bumblebees, stingless bees, and orchid bees have corbiculae.
The corbicula is a polished cavity surrounded by a fringe of hairs, into which the bee collects the pollen; most other bees possess a structure called the scopa, which is similar in function, but is a dense mass of branched hairs into which pollen is pressed, with pollen grains held in place in the narrow spaces between the hairs.
A honey bee moistens the forelegs with its protruding tongue and brushes the pollen that has collected on its head, body and forward appendages to the hind legs. The pollen is transferred to the pollen comb on the hind legs and then combed, pressed, compacted, and transferred to the corbicula on the outside surface of the tibia of the hind legs.
Top photo: Honeybee on flower. © James H. Robinson / Science Source
Lower photo: SEM, bee pollen basket © Dennis Kunkel / Science Source
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Just Small Genetic Tweaks To Chinese Bird Flu Virus Could Fuel A Human Pandemic
by Nell Greenfieldboyce / NPR Health
A study published Thursday shows how a bird flu virus that’s sickening and killing people in China could mutate to potentially become more contagious.
Just three changes could be enough to do the trick, scientists report in the journal PLOS Pathogens.
And the news comes just as federal officials are getting ready to lift a moratorium on controversial lab experiments that would deliberately create flu viruses with mutations like these.
Public health officials have been worried about this bird flu virus, called H7N9, because it’s known to have infected more than 1,500 people — and killed 40 percent of them. So far, unlike other strains that more commonly infect humans, this deadly virus does not spread easily between people.
The fear is that if it mutates in a way that lets it spread more easily, the virus will sweep around the globe and take a heavy toll, because people’s immune systems haven’t ever been exposed to this type of flu before. Past pandemics caused by novel flu viruses jumping from animals or birds into people have killed millions.
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The Dinosaur-Killing Asteroid Acidified the Ocean in a Flash
by Lucas Joel / NY Times
What happened to the dinosaurs when an asteroid about six miles wide struck Earth some 66 million years ago in what is today Mexico is well known: It wiped them out. But the exact fate of our planet’s diverse ocean dwellers at the time, shelly ammonites, giant mosasaurs and other sea creatures, has not been as well understood.
New research now makes the case that the same incident that helped bring an end to the reign of the dinosaurs also acidified the planet’s oceans, disrupted the food chain that sustained life underwater and resulted in a mass extinction. The study, published Monday in Proceedings of the National Academy of Sciences, aims to shore up the hypothesis that the Chicxulub event’s destruction of marine life, the result of sulfur-rich rocks depositing acid rain into the oceans, was just as severe as the fire and fury it brought to land.
“It’s flash acidification, and it transformed ecosystems for millions of years,” said Noah Planavsky, a biogeochemist at Yale and one of the study’s authors. “We were shocked that we actually found this.”
The impact of the Chicxulub asteroid, so named for the crater it carved out around the Gulf of Mexico, sent columns of rock into Earth’s atmosphere, incinerated the planet’s forests and drove tsunamis far across the oceans. But the connection between the crash and the marine extinction has been less solid.
Image above © Detlev van Ravenswaay / Science Source
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Video Clip SS283010 (White Blood Cells Leaving The Blood Stream)
Time-lapse light microscopy footage of white blood cells (leucocytes) migrating to the surrounding tissue from the bloodstream.
This is known as extravasation (or diapedesis) and is a response by the body to tissue damage or infection. The white blood cells are part of the innate (non-specific) immune system response.
The immune system can distinguish between normal, healthy cells and unhealthy cells by recognizing a variety of “danger” cues called danger-associated molecular patterns (DAMPs).
Infectious microbes such as viruses and bacteria release another set of signals recognized by the immune system called pathogen-associated molecular patterns (PAMPs).
© Timelapse Vision Inc / Science Source
How Best To Use The Few New Drugs To Treat Antibiotic-Resistant Germs?
by Richard Harris / NPR Health
Five years ago, Mary Millard went to the hospital for heart surgery. A contaminated medical instrument gave her an infection that led to septic shock. Her heart struggled, and her lungs and kidneys started to fail.
“What I caught was pseudomonas, and it’s a very virulent superbug,” says the 60-year-old former nurse who lives in Baton Rouge, La. This bacterium no longer responds to most antibiotics, and “it lives in you permanently, so I’m on lifetime antibiotics,” she says.
Her doctor prescribed one of the most powerful antibiotics available, and there is no clear backup for her if that stops working. “It’s kind of a wait-and-see. And that’s what’s scary.”
Millard is just one of about 2 million Americans who have been infected with a superbug. Tens of thousands die each year, and the numbers are vastly higher on a global scale.
The Centers for Disease Control and Prevention published a major new report about antibiotic resistant germs on Wednesday.
Image above © SPL / Science Source
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Anna Coleman Ladd, Creator of Prosthetics For WW1 Veterans
Anna Coleman Ladd (1878-1939) was an American sculptor who founded the American Red Cross ‘Studio for Portrait-Masks’ in Paris, France.
She was born in Bryn Mawr, Philadelphia and educated in Europe, where she studied sculpture in Paris and Rome. In late 1917, Ladd moved to France with her husband, Dr. Maynard Ladd, who was appointed to direct the Children’s Bureau of the American Red Cross in Toul.
View More Photos Of Her Work With Veterans
It was at this time she was introduced to the work of Francis Derwent Wood in the “Masks for Facial Disfigurement Department” in Paris. After meeting with Wood, Ladd founded her iwn studio to provide cosmetic masks to be worn by men who had been badly disfigured in World War I
Soldiers would come to Ladd’s studio to have a cast made of their face and their features sculpted onto clay or plasticine. This form was then used to construct the prosthetic piece from extremely thin galvanized copper. The metal was painted to resemble the recipient’s skin.
Her services earned her the Legion d'Honneur Crois de Chevalier and the Serbian Order of Saint Sava.
© Jessica Wilson / Science Source
Fordham’sAmy Aronson, a professor of media studies, and an expert in women’s magazines, weighs in on agencies and companies, such as Shutterstock, who are making an effort to diversify their stock photos. This report is posted courtesy of CBS News.
I get quite a few questions about where I find my stock images that are used in live previews so here’s a list of my favourite (all can be found on the resources page). Most of these are free to use on personal and commercial projects but double check the licenses before use.
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BuzzFeed brings us the latest installment of ridiculous stock photos of women. Pictured here are a few results for a search on “women eating.” See the full list of 45 photos here.
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References for Content Creators and Artists: Drawing References, Posing Sites and Apps, Stock Photo Sites, and Museum and Institution Open Access sites
kiwi:
HEY THIS IS IMPORTANT whats your favorite place to find drawing references?
so far we’ve got
- senshi stock
- croquis cafe
- line-of-action.com
- quickposes.com
- posemaniacs
- clip studio paint models
- pexels.com
- sketchdaily
- eggazyoutatsu atarichan drawer
- designdoll
if you have any more please reply!
Unsplash:
All photos published on Unsplash can be used for free. You can use them for commercial and noncommercial purposes. You do not need to ask permission from or provide credit to the photographer or Unsplash, although it is appreciated when possible. More precisely, Unsplash grants you an irrevocable, nonexclusive copyright license to download, copy, modify, distribute, perform, and use photos from Unsplash for free, including for commercial purposes, without permission from or attributing the photographer or Unsplash. This license does not include the right to compile photos from Unsplash to replicate a similar or competing service.
Freeimages:
You can use the images in digital format on websites, blog posts, social media, advertisements, film and television productions, web and mobile applications. In printed materials such as magazines, newspapers, books, brochures, flyers, product packaging for decorative use in your home, office or any public place or personal use. The rights granted to you by FreeImages.com are: Perpetual, meaning there is no expiration or end date on your rights to use the content. Non-exclusive, meaning that you do not have exclusive rights to use the content. FreeImages.com can license the same content to other customers. Unlimited, meaning you can use the content in an unlimited number of projects and in any media. For purposes of this agreement, “use” means to copy, reproduce, modify, edit, synchronize, perform, display, broadcast, publish, or otherwise make use of.
Stocksnap:
Every single image on StockSnap are governed exclusively by the generous terms of the Creative Commons CC0 license. Specifically, that license means you can do any and all of the following: Download the image file.Publish, revise, copy, alter, and share that image. Use the image (as-is or as you’ve altered it), in both personal and commercial contexts. Moreover, you can put StockSnap CC0 images to any of these usages without buying the right to do it, acquiring written permission from the image’s creator, or attributing the work to the image creator. In other words, there’s no fee to download or use these StockSnap images in accordance with the CC0 license. They’re free to download, free to edit, and free to use - even in a commercial project! You don’t even need to attribute the image to the creator, the way you do with other CC or traditional copyright licensing schemes. (However, even though it’s not required, we here at StockSnap do encourage you to include an appropriate attribution. It’s a nice thing to do.)
Burst.Shopify:
Burst is a free stock photo platform that is powered by Shopify. Their image library includes thousands of high-resolution, royalty-free images that were shot by their global community of photographers. You can use their pictures for just about anything — your website, blog or online store, school projects, Instagram ads, facebook posts, desktop backgrounds, client work and more. All of their photos are free for commercial use with no attribution required.
Pixabay:
Images and Videos on Pixabay are released under Creative Commons CC0. To the extent possible under law, uploaders of Pixabay have waived their copyright and related or neighboring rights to these Images and Videos. You are free to adapt and use them for commercial purposes without attributing the original author or source. Although not required, a link back to Pixabay is appreciated.
Viintage:
All images hosted by Viintage.com are considered to be public domain images, each image is presumed to be in the public domain. It may be distributed or copied as permitted by applicable law. Viintage.com assumes no ownership of the images and they may be downloaded and can be used free of charge for any purpose. They may be downloaded and used for commercial and personal use. Understand “public domain” as the permission to freely use an image without asking permission from the photographer or the illustrator. Thus, the creator of the work will not sue you for violating his/her copyrights. It is your responsibility to make sure, displaying the image does not violate any other law. Viintage.com assumes no responsibility for how or where you use the images found on the site.
Gratisography:
You may use Gratisography pictures as you please for both personal and commercial projects. You can adapt and modify the images and get paid for work that incorporates the pictures. This includes advertising campaigns, adding your logo or text to an image, printed in any size print runs (e.g., book covers, magazines, posters, etc.), on your website, blog, or other digital mediums, and on merchandise as long as the picture itself is not the merchandise.
As someone who draws a lot of faeries, Faestockis godlike.
A wonderful addition to the list!
Unsplash.
Another whopping huge free images site like pixabay: free for commercial and noncommercial use and remixing; just don’t sell the photos unmodified or add them to other photo-sharing sites.
Morguefile.
Big old free photo archive from the dawn of the web. “We are a community-based free photo site, and all photos found in the Morguefile archive are free for you to download and re-use in your work, be it commercial or not. The photos have been contributed by a wide range of creatives from around the world, ranging from amateur photo hobbyists to professionals.”
Open Access at the Met.
The Metropolitan Museum of Art in New York: “Whether you’re an artist or a designer, an educator or a student, a professional or a hobbyist, you now have more than 406,000 images of artworks from The Met collection to use, share, and remix—without restriction.”
Smithsonian Open Access.
- Download, share, and reuse millions of the Smithsonian’s images […] from across the Smithsonian’s 19 museums, nine research centers, libraries, archives, and the National Zoo.
- Limited use, if you’re doing a Science and need control panels/rockets/futuristic an image search with qualifier site: nasa.gov You have to double-check a photo’s caption it’s really a NASA photo, but photos which were taken by NASA spacecraft and astronauts are public domain, since they’re funded by taxpayer dollars. (This also goes for images of animals archived at the USFWS Digital Library, i.e the US Fish and Wildlife Service, or rocks and landscapes on USGSwebsites.
Okay updating and consolidating lots of info here; as well as adding links for ease of access. Adding a brief description for some too; as is the case that not all of them have descriptions above.
(Warning that some of these links contain nude refs, I will try to mark where possible which ones have more prominent ones.)
Posing Sites and Apps:
- Adorkastock. Stock photos for pose refs. DeviantArt gallery started in 2007.
- FreePhotoMuscle.com. (translated page link click here) Japanese stock photo pose site that includes buff people, but in funny poses and costumes.
- CroquoisCafe. (NSFW, nude model poses warning) A stock photo pose site. You should be aware this org has been linked as pro-Trump. I leave it to y’all to decide if you want to use the resources or not. I highly encourage not financially supporting them and trying to support the individual models if you can.
- Line of Action. Fantastic site that includes posing refs, community discussions from other artists, figure study, anatomy, etc. So much stuff in here.
- PoseSpace. Extensive library of poses. Some free resources others are paid. I’ve not fully evaluated both, but you should be able to use this all mostly free and get great use out of it.
- SketchDaily. This one is one of the better ones out there. You can time yourself, search by pose, clothing options, body type, perspective, etc. All real models.
- JustSketch.me. A pose app for any device. Has apps for most devices and a webapp. Customize and pose models/props/scenes.
- Quickposes. Pose site that gives you timed challenges to become more proficient at poses.
- POSEMANIACS. Ref site with anatomical poses. All the ref pics are of 3D models with only the bones and muscles. Can be helpful for seeing how muscles behave in certain poses. limited to two body types tho.
- MagicPoser. A wonderful app that’s great on mobile. Lets you choose size of models, number of them, style, etc. Significant features are use of snap point with the physics engine, adjustable lighting, multiple perspective, 360 angle, articulated hand posing.
- Clip Studio Paint Modeler. Free 3d tool that works with Clip Studio Paint. You can import your own data or other models you find online. Not quite an alternative to Blender, but the integration with CSP is very nice.
- Egg a Zyoutatsu Atarichan Drawer. (requires enabling flash player or downloading and using standalone flashplayer) Drawing tool for pose practice. The developer is working on an html5 version.
- DesignDoll. One of the best pose tool apps out there. You can customize so many things. They also have an extensive collection of ready made poses here. You can use the free or pay once for life and have the poses integrated into the client as well as the ability to export your obj to other programs like blender or smt.
Stock Photo Sites:
- Unsplash. Giant free stock image site.
- freeimages.com. Another stock photo site, less features than some others.
- StockSnap.io. Stock photos with a creative commons CC0 license, which essentially means you can use the photos however you want and don’t have to attribute to them. (though its nice if you do attribute)
- Burst.Shopify. Tons of royalty free high quality images. Similar licensing to StockSnap.
- pixabay. I feel like most people know about this one, but it features entirely free CC0 licensed Photos, Videos, and Music. No attribution required, but still nice to support a giant site with all this content.
- Viintage. Big collection of public domain vintage photos.
- Gratisography. For commercial or personal use. They specialize in odd, quirky, wild stock photos.
- pexels. Great free stock photos and videos. Only a few stipulations of what they don’t allow, but their license info can be found here.
- Faestock. An artist and model with a huge amount of fantasy and fae and other types of photos available. Their terms for use are here.
- MorgueFile. Old stock photo archive that’s been around a long time.
Museum and Institution Open Access sites
USA National Gallery of Art.
Over 50k works available for download.
New York Metropolitan Museum open access.
490k works to browse. Even codes for Animal Crossing New Horizons patterns.
The Smithsonian Institution open access.
Probably one of the largest open access collections available online. Around 3.9 million items available to view.
Many More.
This article from Apollo magazine has an extensive list of open access museums and institutions from around the world. A brief list of places includes:
- Art Institute of Chicago
- Belvedere, Vienna
- Birmingham Museums Trust
- Cleveland Art Museum
- Harvard Art Museums
- J. Paul Getty Museum, Los Angeles
- Kunstmuseum Basel
- Library of Congress, Washington, D.C.
- Los Angeles County Museum of Art
- Mauritshuis, The Hague
- Minneapolis Institute of Art
- Munch Museet, Norway
- Museum of New Zealand Te Papa Tongarewa, Wellington
- Národní galerie Praha
- Nationalmuseet Danmark
- Nationalmuseum, Stockholm
- New York Public Library
- Paris Musées
- Pinakotheken, Munich
- Rijksmuseum, Amsterdam
- Städtische Galerie im Lenbachhaus, Munich
- Statens Museum for Kunst, Copenhagen
- Wellcome Collection, London
- Yale University
wow its been a while since ive seen this post, im so glad more useful info has been added!
Over on my Patreon, I’ve just released a new download pack of 50 original hi-res, royalty-free, Creative Commons licensed abstract/textural photos for you to use in your projects however you’d like - even commercially. These are great for a wide variety of design projects, and also make great wallpapers.
At the $7 support tier you can now get a total of 150 original images, plus a lot of other cool stuff.
Your support on Patreon and your print purchases have been keeping me going over the past couple years while I’ve been developing some long-term projects, and I can’t thank you all enough.
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