Mars - Valles Marineris
Animation of a flight over Mars, passing over the extensive Valles Marineris canyon system. This is an extensive system stretching some 4000 kilometers and reaching 200 kilometers wide and seven kilometers deep.
© Mark Garlick / Science Source
ScienceSource.com image ID: SS1413448
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Copper Reacts with Silver nitrate.
Copper is immersed into a 0.2M solution of silver nitrate (AgNO3).
Since copper is more reactive than silver, a single-displacement reaction occurs: Cu + AgNO3 -> Ag + Cu(NO3)2.
Formation of silver metal (Ag) is clearly visible.
As reaction progresses, the solution becomes slightly bluish due to Cu2+ ions.
Time-lapse Video:
Penny - 45 minutes
Straight wire - 36 minutes
Spiral wire - 24 minutes
Wire in beaker - 40 minutes
© Turtle Rock Scientific / Science Source
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ScienceSource.com image ID's: SS1411807, SS1411818, SS1411829, and SS1411840
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Gravitational Lensing
Gravitational lensing is the effect in which the image of a distant object is distorted by the gravitational field of an object in front of it. Initially, a distant galaxy is at the top, and the Earth at bottom. Diverging light rays from the galaxy are shown in white. If a massive object is placed in the middle, relativity predicts that the light will be bent towards the mass, in effect focusing it on Earth like a converging lens. Different arrangements produce slightly different effects. A single large mass can produce a ring with a bright central spot or multiple images forming a cross. When the lensing object is a massive cluster of galaxies, images of the more distant galaxy are likely to be smeared into thin irregular arcs.
ScienceSource.com image ID: SS220023
Credit: M. Kornmesser/Lars Lindberg Christensen/ESA/Hubble/ SPL/Science Source
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Gravitational Lensing
Gravitational lensing is the effect in which the image of a distant object is distorted by the gravitational field of an object in front of it. Initially, a distant galaxy is at the top, and the Earth at bottom. Diverging light rays from the galaxy are shown in white. If a massive object is placed in the middle, relativity predicts that the light will be bent towards the mass, in effect focusing it on Earth like a converging lens. Different arrangements produce slightly different effects. A single large mass can produce a ring with a bright central spot or multiple images forming a cross. When the lensing object is a massive cluster of galaxies, images of the more distant galaxy are likely to be smeared into thin irregular arcs.
ScienceSource.com image ID: SS220023
Credit: M. Kornmesser/Lars Lindberg Christensen/ESA/Hubble/ SPL/Science Source
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Going, Going, Gone!
Didinium eating Paramecium
Composite clip of Didinium nasutum attacking and ingesting a Paramecium. Didinium nasutum is a one-celled, barrel-shaped ciliate characterized by two bands of cilia around its body. It is commonly found in bodies of fresh or brackish water, where it is a voracious predator of its main food source, the much larger unicellular ciliate Paramecium. Didinium attacks and engulfs its prey and digests it within a few hours, ready to hunt again. Composite of color enhanced scanning electron micrographs (SEM).
© Greg Antipa / Science Source
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Vampire!
Vampyrella amoeba feeding on algae.
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https://www.sciencesource.com/vampyrella
Time-lapse light microscopy footage of a Vampyrella lateritia trophozoite (round) moving along and feeding on cells forming a strand of Spirogyra algae (tubular). Vampyrella is a unicellular micro-organism sometimes described as a 'vampire amoeba'. It attacks other microscopic organisms, such as algae, and penetrates their cell walls and extracts the contents (green). This clip shows the process of cell wall penetration, suction and extraction for two algal cells. Vampyrella are found in aquatic freshwater environments, with other vampyrellid species found in soil and in the sea.
© Dr Oliver Skibbe/Science Source
ScienceSource.com ID#'s: SS271949 and SS271952
Music: “B minor” by Arulo at Mixkit.co
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Blood Cells!
Human blood smears showing a various human blood cell types. The small bluish dots among the red blood cells are platelets.
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Shown in the video are the following:
1) Red Blood Cells
2) Neutrophils
3) Lymphocytes
4) Monocytes
5) Eosinophils
6) Platelets
7) Erythroblasts
8) Neutrophil with ring-shaped nucleus and toxic granulations in their cytoplasm in an infectious mononucleosis
9) Leukocytosis in an acute infection. Neutrophil leukocyte with nuclear hypersegmentation.
© Jose Luis Calvo/Science Source
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"Rain Dance"
A Herring Gull hunts for worms by stamping on the ground with its feet. The stamping produces vibrations that mimic the sound of raindrops. The sound of the “raindrops” entices the worms to crawl to the surface.
Video: Herring gull (Larus argentatus) hunting for worms, stamping on ground with feet, Ceredigion, Wales, UK, November.
© Dave Bevan / NaturePL / Science Source
Music: "Cherry on Top"
by Michael Ramir C. (mixkit.co)
ScienceSource.com image ID# SS21943031
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Sneezing... Schlieren Photography
Video of man sneezing at regular speed, in reverse, and in slow motion.
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https://www.sciencesource.com/archive/Video/Silhouette-of-man-sneezing-SS26886.html
The visual technique used here is Schlieren Photography. Schlieren are optical variations (inhomogeneities) in transparent media that are not necessarily visible to the human eye. Schlieren physics developed out of the need to produce high-quality lenses devoid of such inhomogeneities. This imaging technique in this video uses the variations in the index of refraction of the air to show how the air moves due to the sneeze.
© Gary S. Settles / Science Source
ScienceSource.com ID# SS26886
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360 Degree Aurora Borealis (Northern Lights)
A 360 degree aurora borealis (northern lights) all sky display, looking straight up through the black spruce trees toward the Big Dipper's handle in the White Mountains of Alaska. Canon 6D DSLR Camera & 8mm Rokinon Fish-eye Lens set to F3.5, ISO 3200, 6 second exposures, with 1 second delay. The time-lapse was captured for 4 hours (this video is doubled with he second half in reverse). Images were captured from 11:30 pm on March 31, 2022 until 03:37am on April 1, 2022. Earth had been hit by several M-class Solar Flares & Solar Coronal Mass Ejection event that night, which made the aurora so fantastic to watch.
ScienceSource.com ID# SS1385119
© John Chumack / Science Source
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https://www.sciencesource.com/archive/Video/360-Degree-Aurora-Borealis--Northern-Lights--SS1385119.html
Music: "Relax Beat" by Arulo (mixkit.co)
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Silver Chromate Precipitate
Silver chromate (Ag2CrO4) precipitate (bright red) formed by adding 0.25 M solution of silver nitrate (AgNO3) to 0.15 M solution of potassium chromate (K2CrO4). The reaction is K2CrO4 + AgNO3 -> Ag2CrO4 + KNO3. This is an example of a double replacement reaction.
© Turtle Rock Scientific/Science Source
ScienceSource.com image ID# SS121993
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Cannabis Leaf with Trichomes
Scanning electron micrograph (SEM) of the surface of a marijuana (Cannabis sativa) plant leaf, showing glandular cells, called trichomes. These are capitate trichomes that have stalks. They secrete a resin containing tetrahydrocannabinol (THC), the active component of cannabis when used as a drug. The spherical cells at the top of the trichomes are 60 um in diameter.
© Ted Kinsman/Science Source
ScienceSource.com image ID# SS21595317
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Mushroom Growth and Spore Release
American Yellow Fly Agaric Mushroom growing (time lapse over several days) and then releasing spores.
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This mushroom is commonly found in New York State in the fall. The American Yellow Fly Agaric is a basidiomycete fungus of the genus Amanita. It is one of several varieties of the Amanita muscaria fungi, all commonly known as fly agarics. This mushroom mostly grows in association with conifers but can also grow in association with deciduous trees. The range of this mushroom is from Michigan to North Carolina, and is common in New England. As in other Amanita muscaria, the guessowii variety contains ibotenic acid and muscimol which can cause hallucinations. This mushroom releases millions of spores when the cap is fully open.
© Ted Kinsman / Science Source
Music: “Staring at the Sky” by Alejandro Magaña (A. M.) mixkit.co
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Hair Raising! - "Piloerection"
Close-up of fine hairs on a human arm rising and falling. Skin hairs rise in response to stimuli including cold, fear and awe. Technically known as piloerection, it is produced by the contraction of a small muscle (the arrector pili) at the base of each hair.
© SPL Motion / Science Source
ScienceSource.com ID# SS277212
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https://www.sciencesource.com/archive/Video/Arm-hairs-rising-and-falling-SS277212.html
Music: "Also sprach Zarathustra" by Strauss
Kevin MacLeod (Creative Commons Attribution 3.0 Unported license)
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Flame Test
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https://www.sciencesource.com/CS.aspx?VP3=DamView&VBID=2OPVHKG5GURH3
A flame test is an analytical procedure used in chemistry to detect the presence of certain elements, primarily metal ions. The color of the flame is determined by the element's emission spectrum which is characteristic to that element. Therefore, flame tests can be used as an analytic procedure for identifying elements.
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© Turtle Rock Scientific/Science Source
Music: "Finding Myself"
by Michael Ramir C.
(mixkit.co)
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Video of freshwater annelid of the genus Chaetogaster.
Darkfield illumination.
© Rubén Duro/Science Source
ScienceSource.com ID# SS1299226
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CYTOSKELETON INSIDE A CELL
Animation of the inside of a typical human cell, showing the components of its supportive cytoskeleton. The main supportive structures are thin microfilaments made of the protein actin (white), and larger microtubules, made from the protein tubulin (blue-green blobs). Microtubules are important in maintaining the cell's shape, helping its movement and motility, and providing a framework through which components can be moved around the cell. One way this occurs is through the motor protein kinesin (red). A microtubule grows to where a cellular component is required. The kinesin binds to a transport vesicle containing the component protein, and the head end of the kinesin binds to the microtubule. It then 'walks' along the microtubule from the center to the edge of the cell, carrying the vesicle's content to where it is required. The growth of the microtubules is controlled by the centrosome, a central body in the cell. This contains two centrioles (orange) made of tubulin, surrounded by a protein body. This clip is available without labels.
© Rhys Lewis, AHS, DECD, UNISA/Science Source
ScienceSource.com ID# SS270582
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Photosynthesis in Cyanobacteria
Time lapse microscope footage of a mat of cyanobacteria bubbling as it produces oxygen through photosynthesis. Photosynthesis is the process by which organisms use the energy of sunlight to turn atmospheric carbon dioxide into energy-rich sugars, releasing oxygen as a waste product. Cyanobacteria were the first photosynthetic organisms on Earth, and were responsible for oxygenating the atmosphere some 2.3 billion years ago. It is thought that the chloroplasts found in plant cells derived from symbiotic cyanobacteria that lived within the cells of the ancestors of plants and algae.
© Francis Chee / Science Source
ScienceSource.com image ID# SS278049
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