#scientific microscopes

[labgoindia]

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[pinkeoni]

streddit is such an interesting place because I’ve never seen a community that was so active in their fandom that so adamantly rejects what is happening on screen. Like it’s not a case of GA who watch the show casually so they may not pick up on certain things— it’s fans who frequently engage with the show, the supplemental books and comics, fan material, but they also so adamently ignore surface level canon material if it doesn’t match the version of the show they built in their head. They are too involved to be GA and let they know less than actual GA

[monards]

rip rhinedottir taking middle school biology probably could’ve saved you

[un-pearable]

species don’t exist — i mean, obviously, they do. but they aren’t objective. species are (as most things are) a cultural construction, a coalition of humans deciding where and when to draw what lines. constantly in debate: did you know paleoanthropologists are unintentionally incentivized to claim to have discovered entire new genera along the path of human evolution because they are more likely to generate media buzz and gain desperately needed funding. thousands of plants may be categorized together but a centimeter’s difference in skull thickness warrants an entire new genus name. we are more genetically similar to chimpanzees than they are to their fellow non-human primates, but due to the rules of Linnaean taxonomy humanity will never be collapsed into the same genus as them because the rules dictate that the older genus name prevails: humanity would never accept becoming Pan sapiens, especially not after it took decades for it even to be accepted that humans were a part of the taxonomy in the first place. even the most basic of criteria we’ve used in the past to decide where a species stops and starts continues to be debunked - fish from entire opposites of the world can produce fertile offspring. analogous evolution can find lines that split millions of years back creating critters that would be side by side in a disney cartoon. categorization is a eternal battleground of western scientific standards requiring universalized objective qualifiers vs. the futile efforts to recognize the unmeasurable amounts of nuance held in traditional ecological knowledge — versus the fact that, inevitably, it all boils down to a vast continuum contained within only a few percentage points of variation in the squiggly lines that tell the cells of everything on the entire globe how to eat

[noaasanctuaries]

What do you see in this photo? 🔬

Students across the nation in all 50 states looked up at their class projector screen this year and witnessed what some describe as “alien-like life decked out in discoware grooving across the dance floor!”

While kids have access to a lot of interesting content these days, it's not often a student can watch microscopic life magnified and projected over the internet by plankton experts. The featured plankton was collected from surface waters just off of San Francisco, and shared nationwide as part of the celebration of NOAA’s National Marine Sanctuary System’s 50th anniversary.

Read the full story:

What's going on in this clip?

This tiny free-swimming jellyfish larva is called an ephyra. As it feeds and grows it will develop the stinging tentacles of an adult jellyfish. Visual description: Translucent, microscopic living organism pulses several times.

Credit: Janai Southworth/NOAA/NMSF

[puffycinnabunny]

More brainy sketches

[introvertedswimmer]

Gotta love science class... Especially when you show up early and the class before you was looking at spirogyra samples. I can't lie though these things are pretty damn cool to look at!

[apollos-boyfriend]

icarus you are a study to everyone, legit you are in a green test tube filled with goo to me

thbis is the nicest thing anyone’s ever said to me

[science-sculpt]

RNA: The Dynamic Molecule Driving Life's Diversity

DNA, the blueprint of life, often steals the spotlight when it comes to genetics. But lurking in its shadow is another crucial molecule, RNA (Ribonucleic Acid), playing a pivotal role in the symphony of life. More than just a passive messenger, RNA boasts a vibrant history and holds exciting potential for the future. Let's embark on a journey to unveil the world of RNA, exploring its captivating story and why it deserves your attention.

The story of RNA's discovery began in 1860 when Friedrich Miescher isolated a mysterious "nuclein" from white blood cells. However, it wasn't until the 1950s that James Watson and Francis Crick, alongside Rosalind Franklin (whose contributions were initially overlooked), unraveled the structure of DNA, relegating RNA to a supporting role as a mere messenger molecule. But the plot thickened in the 1960s when researchers like Howard Temin and David Baltimore stumbled upon reverse transcriptase, an enzyme that could convert RNA into DNA, challenging the long-held "central dogma" of DNA being the sole source of genetic information. This discovery opened the door to a whole new understanding of RNA's diverse capabilities.

The Many Faces of RNA

But RNA isn't just a protein puppet master. There are different types of RNA, each with unique jobs:

Messenger RNA (mRNA): Delivers the protein-making message. Transfer RNA (tRNA): Brings the amino acids, the building blocks of proteins, to the party. Ribosomal RNA (rRNA): The foreman of the ribosome factory, making sure everything runs smoothly. Non-coding RNA (ncRNA): A diverse bunch with various roles, from regulating genes to fighting viruses.

The true game-changer came in the early 2000s. Scientists stumbled upon a vast class of non-coding RNAs that don't code for proteins but have diverse and crucial functions. microRNAs (miRNAs), for example, regulate gene expression by silencing specific genes, while long non-coding RNAs (lncRNAs) control various cellular processes like development and disease. This discovery shattered the dogma that only protein-coding genes mattered, highlighting the crucial roles played by non-coding RNAs.

This newfound understanding of RNA's potential has ignited a revolution in medicine. Researchers are exploring RNA-based therapies for various diseases, from cancer and neurodegenerative disorders to viral infections. mRNA vaccines, like the ones used against COVID-19, harness the power of messenger RNA to deliver genetic instructions directly to cells, triggering immune responses. The future holds even more promise, with scientists exploring techniques like CRISPR-Cas9 to edit RNA and potentially treat genetic diseases.

New discoveries are constantly rewriting our understanding of this versatile molecule. Its adaptability and diverse roles make it a powerful tool for exploring the very essence of life, from evolution and development to disease and therapy. So, the next time you hear about genes, remember that RNA, the often-overlooked player, is just as crucial in shaping the tapestry of life. It's a story of constant evolution, unexpected discoveries, and immense potential, making RNA a molecule brimming with fascination and promise for the future.

[katiajewelbox]

The confocal microscope at Imperial College's Sir Alexander Fleming Building lab is used for imaging the interior of living plant and animal cells.

During my PhD project, I used the confocal microscope to view the interior of Nicotiana benthamiana plant cells which were expressing Green Fluorescent Protein (GFP) tagged genes of interest. I aimed to find out where the proteins encoded by the genes of interest were localised in the plant cell, which turned out to be in the cytoplasm.

From Wikipedia's entry on Confocal Microscopy: "Confocal microscopy, most frequently confocal laser scanning microscopy (CLSM) or laser scanning confocal microscopy (LSCM), is an optical imaging technique for increasing optical resolution and contrast of a micrograph by means of using a spatial pinhole to block out-of-focus light in image formation. Capturing multiple two-dimensional images at different depths in a sample enables the reconstruction of three-dimensional structures (a process known as optical sectioning) within an object. This technique is used extensively in the scientific and industrial communities and typical applications are in life sciences, semiconductor inspection and materials science. Light travels through the sample under a conventional microscope as far into the specimen as it can penetrate, while a confocal microscope only focuses a smaller beam of light at one narrow depth level at a time. The CLSM achieves a controlled and highly limited depth of field."

Music by the Fiechter Brothers

Images by Katia Hougaard & the Facility for Imaging by Light Microscopy at Imperial College London

[spitblaze]

Okay so. My hc was that OT1 was in the 1600s because I heard somewhere that 2 takes place 200 years after and like, everything about Partitio's thing specifically shouts '1800s' to me. So logically 1 would take place in the 1600s. But I actually have no idea where I heard the '200 years later' thing so maybe I just made it up. Or maybe this is all happening at the same time and theres like no cultural or technological exchange happening between Orsterra and Solista. Or maybe I'm overthinking things and it doesn't matter when shit is because having fucking MAGIC would completely fuck with the scientific advancement of literally any culture youd give it to

[pink-loveee]

Que bonita es la microbiología 🦠

[krtri]

YOURE THE REALEST PERSON EVER FOR TRANTHARRY POSTING!!!!!! ive been saying this since day 1. You get me. Thank you. Cheering and screaming.

omg thank you so so so much 😳😭🫡 i almost felt bad for the spam at first but idk trantharry make me crazy!!! like it started with me like “i think they could kiss. for the laughs.” but then i gave it some thought and like… i think they could be really compatible! they have several common interests, they’re both SOOOOO divorced, trant would know how to help harry get and stay sober, harry could maybe become the father that stepped up (emphasis on maybe), i think they’d both be total total freaks, trant would actually be interested in how harry’s mind works, they could be so annoying together, etc etc etc. 🥰

[acrosscenturiesandgenerations]

▪︎ Microscope, achromatic.

Place of origin: Birmingham, Warwickshire, England

Date: 1864

Medium: Metal, glass

[akechi-if-he-slayed]

AP SOUTH PARK YAOI REAL

[pwlanier]

TWO ANTIQUE BRASS MICROSCOPES & ACCESSORIES

Including a Dollond, London double pillar monocular compound microscope, marked Dollond London, with several accessories; and a boxed field microscope, also compound and monocular, unmarked, with compendium and numerous accessories, as well as a period engraving illustrating the parts included.

Butterscotch Auctions