Paramecium with Contractile Vacuoles
Light microscope view of paramecium showing contractile vacuoles. Contractile vacuoles are a specialized vacuole (membrane bound organelle/compartment) that regulates the amount of water inside a cell. In freshwater, the concentration of solutes is hypotonic (higher inside than outside the cell) and under these conditions, osmosis causes water to accumulate in the cell from the external environment. The contractile vacuoles acts as part of a protective mechanism that prevents the cell from absorbing too much water and bursting from the increased internal pressure. The water collection by the vacuole and water expulsion of the contractile vacuole occur at regular intervals. One cycle can take several seconds, depending on the species and the environment's osmolarity.
© BioMEDIA Associates / Science Source
ScienceSource.com image ID# SS261657
#paramecium #protozoa #protozoan #ciliate #contractile #vacuole #contractilevacuole #vacuoles #contractilevacuolex #organelle #organelles #microscopy #lightmicroscopy #science #biology #pondlife #microbiology #alwsyslearning #scienceteacher #biologyteacher #sciencevideo #stockvideo #cell #cells #singlecell #homeschoolscience #homeschool
Good Luck Crew Dragon!
International Space Station in Night Sky
Time lapse of the International Space Station (ISS) moving across the night sky. The ISS is the largest artificial body in orbit and can often be seen by the naked eye. Inhabited by a team of astronauts it serves as a space research laboratory. Filmed in Giessen, Hessen, Germany.
© Babak Tafreshi / Science Source
ScienceSource.com ID# SS249421
#crewdragon #dragoncrew #dragon #spacex #iss #internationalspacestation #nightsky #timelapse #dragon2 #space #spaceship #rocket #launch #NASA #rocketlaunch #spacestation #sciencevideo #spacevideo #astrovideo #astrophotography #rockets #engineering #aerospace #aerospaceengineering #stockvideo #elonmusk #tesla #spacetravel #science #technology
Glowing "Gummy" Worms... sort of.
Fluorescent light microscopy video of one larger, and several smaller, specimens of the nematode roundworm Caenorhabditis elegans. Fluorescent dyes have been used to highlight the head (green) and internal organs (red). Nematodes are small worms found in a range of environments worldwide. C. elegans is a transparent, soil-dwelling nematode, found in temperate climates. It feeds on bacteria, and reaches lengths of about 1 millimeter. C. elegans is used extensively in biological research as they can reproduce by self-fertilization (resulting in identical offspring) and take a short time to reach maturity. C. elegans was the first multicellular organism to have its whole genome sequenced. Nematodes have a fixed, genetically determined number of cells, a phenomenon known as eutely which helps greatly in developmental research. The adult hermaphrodite has 959 somatic cells, while the male C. elegans has 1031 cells.
ScienceSource.com ID# SS248234
© Heiti Paves/Science Source
#nematode #celegns #caenorhabditiselegans #nematodes #eutely #hermaphrodite #hemaphrodites #worm #worms #wiggly #fluorescentlightmicroscopy #microscopy #sciart #scienceart #alwayslearning #scienceteacher #biologyteacher #biology #homeschoolscience #science #biologyclass #biologyresearch #biotechnology #genetics #developmentalbiology #stockvideo #sciencevideo #roundworm #roundworms
Hemodialysis Fistula, Angiography
Angiography video of an arteriovenous fistula in the elbow of a 53-year-old patient, created for hemodialysis treatment. The fistula (dark region) is a surgical joining of an artery and vein, which will be connected to a dialysis machine during the dialysis procedure. Hemodialysis is the artificial filtering of blood outside the body, performed in cases where the kidneys are not able to filter blood as normal. Waste products such as urea are removed and the blood returned to the body through the fistula. Angiography is an imaging technique in which a radio-opaque contrast medium is injected into blood vessels to allow them to be seen on an X-ray.
© Zephyr / Science Source
ScienceSource.com image ID # SS221550
#hemodialysis #renaldisease #medstudent #kidneyhealth #kidneys #dialysisnurse #angiography #angiogram #angiograph #sciencevideo #medicalvideo #xray #radiograph #radiography #fistula #arteriovenousfistula #artery #vein #dialysis #renal #renalfailure #filtering #bloodfiltering #kidney #medicine #renaldoctor #kidneydisease #nephrology #futuredoctor #kidneyproblems
Chemistry Lesson of the Day....
Nitrogen Dioxide Equilibrium
Nitrogen dioxide (NO2) gas exists in equilibrium with dinitrogen tetroxide (N2O4) gas, 2NO2 <-> N2O4. A sealed ampoule with nitrogen dioxide is initially at room temperature. The ampoule is then heated in a water bath with hot water. According to Le Chatelier's principle, at lower temperatures the equilibrium is shifted to dinitrogen tetroxide (colorless). At higher temperatures the equilibrium is shifted to nitrogen dioxide (brown color). A second ampoule with nitrogen dioxide at room temperature is included for color reference.
© Turtle Rock Scientific / Science Source
#chemistry #chemistryclass #chemistryteacher #homeschoolchemistry #homeschoolscience #science #scienceteacher #nitrogendioxide #nitrogen #equilibrium #sciencevideo #LeChateliersprinciple #LeChatelier #chemical #chemicals #scienceclass #alwayslearning #scienceisfun #education #scienceexperiment #homeschooling #learning #teachersofinstagram #homeschool #highschoolscience #highschoolchemistry #experiment
Glasswing Butterfly Head, SEM
Motion scanning electron microscope (SEM) view rotating around the head of a glasswing butterfly (Greta oto). The head bears large compound eyes, made of individual units called ommatidia. Below the eyes are sensory palps, used for tasting food. Emerging from between the eyes are long antennae, used for detecting scents in the air. At the base of the head is the coiled proboscis, which is uncoiled into a sucking tube for feeding. The Glasswing Butterfly is named as its wings are not covered in colorful scales as is the case with most butterflies, instead having large transparent areas more like the wings of other insects.
Nanoflight ® Movie, Stefan Diller/Science Source
ScienceSource ID # SS249148
#butterfly #glasswing #glasswingbuttergfly #sem #scanningelectronmicroscopy #microcopy #motionsem #sciencevideo #naturevideo #marcovideo #marco #butterflies #gretaoto #compoundeye #eye #antennae #palps #proboscis #sciart #scienceart #insect #insects #entomology #entomologist #scienceteacher #homeschoolscience #biologyteacher #biology #sciencenerd #stockvideo
One egg... one sperm (and a needle) - ICSI
Sperm injection into an egg during in-vitro fertilization
Light microscope footage of a micro-needle being used to inject a human sperm cell directly into an egg cell (ovum). This procedure is known as intracytoplasmic sperm injection (ICSI), a form of in vitro fertilization (IVF). It is typically performed when the male partner is infertile, either due to a low sperm count or malformed sperm cells. After manual fertilization, the egg is cultured and implanted into the woman's uterus for development.
© Dr. Najeeb Layyous / Science Source
ScienceSource.com ID# SS25897
#ivf #icsi #ivfsuccess #fertility #infertilityawareness #sperm #egg #fertilization #sperminjection #intracytoplasmicsperminjection #needle #microneedle #microscopy #lightmicroscopy #sciencevideo #healthclass #sciecneteacher #homeschoolscience #science #invitrofertilization #invitro #fertilisation #infertility #stockvideo #lowspermcount #humanegg #injection #injected #stockvideo
Volvox Colonies in Motion...
Volvox aureus is a very large motile colony, common in ponds and lakes. Volvox colonies contain 500 to several thousand biflagellate cells arranged at the periphery of a mucilage shell. Inside of several colonies there are young colonies. One colony (center) has zygotes (orange-red) inside. The zygotes are the result of sexual reproduction which can be triggered when environmental conditions change. The zygote are desiccation (drying) resistant and can survive if the environment is not ideal for colonies. Under normal environmental conditions Volvox colonies tend to reproduce asexually. Microscopic contrast method : Darkfield. Capturing device: DSLR Canon 5DMk2 with Microscope adaption. Captured field width : 2.1 mm. Magnification on Sensor : 17x.
© Gerd Guenther / Science Source
ScienceSource.com ID# SS256163
#volvox #volvoxaures #volvoxcolony #volvoxcolonies #algae #alga #pondlife #biology #nature #colony #colonies #biflagellates #biflagellate #zygotes #zygote #botany #botanist #greenalgae #green #sciencevideo #scienceteacher #homechoolscience #alwayslearning #stockvideo #microscopy #sciart #scienceart #green #plant #plants
Keratinocyte migration... how wounds heal.
Migration of keratinocytes, time-lapse light microscopy. Keratinocytes are skin cells found in the epidermis (the outer layer of the skin). Keratinocytes produce the hard protein keratin and then die, forming a tough dead layer that protects the living skin beneath. This layer is sloughed off continuously and replaced by living cells from beneath. Keratinocyte also migrate across wounds during the process of healing.
© Dr. Torsten Wittmann / Science Source
ScienceSource.com image ID#: SS221623
#keratinocytes #keratinocyte #skin #skinscells #epidermis #skincell #cell #cells #keratinocytemigration #cellmigration #timelapse #histology #healing #wound #woundhealing #keratin #microscopy #timelapsemicroscopy #sciart #scienceart #sciencevideo #scienceteacher #alwayslearning #healthyskin #integumentarysystem #integumentary #dermatology #dermatologist #stockvideo
Ever wonder what a cell looks like when it is working?Cytoplasmic streaming, light microscopy
Real-time differential interference contrast microscopy footage of cytoplasmic streaming and movement of organelles in plant cells. This is a hair cell from a stamen of a Tradescantia (spiderwort) plant. Cytoplasmic streaming, or cyclosis, is the mechanism by which general transport and solute movement takes place within cells. This two-way process is aided by the actin protein microfilaments of the cell's cytoskeleton.
© Heiti Paves / Science Source
ScienceSource.com Image ID #: SS248276
#cytoplasmicstreaming #cytoplasm #cell #cells #organelles #organelle #cyclosis #plantcell #plantcells #sciencevideo #dic #differentialinterferencecontrast #microscopy #lightmicroscopy #sciart #scienceart #botany #botanist #scienceteacher #biologyteacher #homeschoolscience #science #nature #biology #spiderwort #tradescantia #celltransport #cellulartransport #actin #microfilaments #cytoskeleton #stockvideo
https://www.sciencesource.com/archive/Cytoplasmic-streaming--light-microscopy-SS248276.html
Bdelloid rotifer, light microscopy
© Roland Gross / Science Source
Rotifers are microscopic aquatic animals that are related to roundworms. A ring of cilia surrounds the mouth at the head end (left), which is used to ingest bacteria, algae and organic detritus. The pharynx, or mastax, pulsates as the rotifer feeds. The majority of rotifers are found in fresh water. They are very common and widespread. Bdelloid rotifers are unusual in that they are all female and reproduce parthenogenetically. Filmed with differential interference contrast illumination.
#rotifer #rotifers #Bdelloid #Bdelloidrotifer #Bdelloidrotifers #biology #invertebrate #invertebrates #sciencevideo #scienceteacher #biologyteacher #homeschoolscience #microorganism #lightmicroscopy #microscopy #sciart #scienceart #nature #parthenogenesis #parthenogenetic #pondlife #zoology #stockvideo #science #naturalhistory
Let's take a spin... a spin around a blood sucking tick!
This is a scanning electron micrograph (SEM) flight around the body and head of an adult tick, Ixodes ricinus. This tick is a parasite that attaches to a mammal and pierces its skin with its saw-like mouthparts, feeding on its blood for several days. The tick is an important vector of several diseases, including Lyme disease, Q fever and encephalitis. This tick is typically found in humid woods, heaths and grasslands, where it waits on a tall blade of grass for a passing mammal. Adult ticks are 2-3 millimeters long, with females larger than males. After a meal of blood, however, engorged ticks can reach more than a centimeter in length. I. ricinus is found throughout Europe including the UK, although it is absent from drier areas. This species is not found in the United States or North America but there are other species in this genus including Ixodes pacificus and Ixodes scapularis that are very similar.
© Nanoflight / Science Source
#tick #ixodes #ticks #ixodesricinus #lymedisease #pestprotection #doglovers #lymediseaseawareness #lyme #tickseason #docktick #dogticks #qfever #encephalitis #adulttick #bloodsucker #bloodsucking #parasite #diseasevector #disease #diseasecarrier #Ixodespacificus #Ixodesscapularis #Arthropod #Arthropoda #Arthropods #arachnids #arachnid #entomology #entomologist #scienceteacher #sciencevideo #stockvideo
Silver Crystals
© Beauty of Science / Science Source
Time-lapse microscopy of crystals of silver forming on copper during a metal displacement reaction. Copper is a more reactive metal than silver. Over time, copper displaces (replaces) the silver in the silver nitrate solution to form a solution of copper nitrate. The silver that is displaced out of solution crystallizes on the copper. The chemical reaction is: Cu + 2AgNO3 -> Cu(NO3)2 +2Ag.
#silver #silvercrystals #crystals #crystal #science #chemistry #chemistryvideo #sciencevideo #sciart #scienceart #microscopy #crystalsforming #reaction #chemicalreaction #chemical #copper #metaldisplacement #metaldisplacementreaction #silvernitrate #mesmerizing #oddlysatisfying #satisfyingvideos #abstract #timelapse #stockvideo #scienceteacher #chemistryteacher #chemistryclass #homeschooling #homeschool
We're firing on all cylinders today!
Spark Plug - two views (close and closer!)
© Ted Kinsman / Science Source
A car spark plug firing. The spark plug is the trigger that causes the gasoline to burn at a specific time in the car's internal combustion engine, providing the gas/air mixture the activation energy to start to burn.
#spark #sparks #sparkplug #plug #plugs #cartech #cartechnology #engineering #mechanicalengineering #physics #science #technology #electricity #electrical #electricalengineering #sciencevideo #video #scienceteacher #shopteacher #homeschool #homeschooling #physicsclass #physicsteacher #stockvideo #sparkplugfiring #engine #internalcombustionengine #cumbustionengine #gasoline
Tardigrade Tuesday!
Water Bear Walking Under a Microscope.
© Sinclair Stammers / Science Source
Tardigrade (Hypsibius dujardini) walking under a microscope. Tardigrades are commonly known as water bears or moss piglets. They are found in practically every habitat on Earth, from hot springs to beneath ice sheets, and are renowned for their toughness. Experiments have shown they can survive being frozen to nearly absolute zero and heated to 150 degrees Celsius. They have survived pressures of more than 6000 atmospheres, and have survived after prolonged exposure to the vacuum and radiation found in space. In unfavorable conditions they can dehydrate to 1% of their normal water content and remain alive in stasis for over a decade. In more normal conditions, they prefer moist environments where they feed on algae and bacteria. This tardigrade is often used as a model organism in biological research, and its genome is being sequenced.
Ice Crystals Forming on a Soap Bubble
© Mike Shaw / Science Source
Soap bubble freezing in real time, outdoors with an air temperature of minus 15 degrees Celsius (5 F). The thin crystals of dendritic ice spread over the surface of the bubble as the water freezes. These patterns are known as fern frost, due to the resemblance of the crystal pattern to the fronds of a fern. Filmed in St Paul, Minnesota, in winter.
#soap #soapbubble #frozen #freezing #bubble #bubbles #freeze #science #chemistry #physics #cold #winter #ice #icy #dendriticice #dendritic #crystal #crystals #icecrystals #sciencevideo #coolvideo #stockvideo #sphere #orb #globe #sciencenerd #amazing #interesting #oddlysatisfying
Hey! Whatcha doin' there?
Southern white-faced owl (Ptilopsis granti) performing convolutions with his head.
© Biosphoto / Alain Mafart-Renodier / Science Source
#owl #owls #bird #birds # #cute #nature #wildlife #instagood #birdsofinstagram #birdphotography #naturephotography #birding #owlsofinstagram #ornithology #your_best_birds #ptilopsis #ptilopsisgranti #southernwhitefacedowl #naturevideo #derp #whatchadoing #whatchadoin #stockvideo
Cross Bridge Cycling of Muscle
Cross Bridge Cycling of Muscle Cells
Myosin and actin interact in cross bridge/power stroke cycling. Like skeletal and cardiac muscle tissue, smooth muscle cells do rely on crossbridge cycling between actin and myosin to develop force. However, in smooth muscle, crossbridge cycling cannot occur until myosin heads are activated as the end result of an activation cascade begun by a rise in cytosolic calcium levels.
© INTELECOM / Science Source
Cross Bridge Cycling of Muscle
Cross Bridge Cycling of Muscle Cells
A muscle sarcomere shortens during contraction due to cross bridge cycling. Because actin is tethered to structures located at the lateral ends of each sarcomere, called the "z disc", any pulling of the actin filament results in a shortening of the sarcomere and thus the muscle.
© INTELECOM / Science Source
Barn Owl in Slow Motion
Barn Owl, (Tyto alba), wings and head shaking,
© Gerard Lacz Images / Science Source
#owl #owls #biology #nature #bird #birds #slowmotion #highspeed #video #naturevideo #stockvideo #tyto #tytoalba #barnowl #owlsofinstagram #owllover #birdsofinstagram #barnowls #ornithology #birdvideo #twist #necktwist
Active site of the coronavirus main protease with an inhibitor bound.
The coronavirus 3CL hydrolase (Mpro) enzyme, also known as the main protease, is essential for proteolytic maturation of the virus. It is thought to be a promising target for discovery of small-molecule drugs that would inhibit cleavage of the viral polyprotein and prevent spread of the infection.
© Juan Gaertner / Science Source
#coronavirus #virus #chinavirus #chinanews #virology #outbreak #outbreaks #sars #microbiology #ncov #mers #sciart #scienceart #wuhanvirus #wuhanvirusoutbreak #wuhancoronavirus #novelcoronavirus #2019ncov #stockvideo #video #covid19v #hydrolase #3clhydrolase #enzyme #polyprotein #research #viralresearch #molecularmodel
Tardigrade walks through algae
Tardigrade (Hypsibius dujardini) walking through algae, microscope view. Tardigrades are commonly known as water bears or moss piglets. They are found in practically every habitat on Earth, from hot springs to beneath ice sheets, and are renowned for their toughness. Experiments have shown they can survive being frozen to nearly absolute zero and heated to 150 degrees Celsius. They have survived pressures of more than 6000 atmospheres, and have survived after prolonged exposure to the vacuum and radiation found in space. In unfavorable conditions they can dehydrate to 1% of their normal water content and remain alive in stasis for over a decade. In more normal conditions, they prefer moist environments where they feed on algae and bacteria. This tardigrade is often used as a model organism in biological research, and its genome is being sequenced.
View more tardigrade videos here: https://www.sciencesource.com/CS.aspx?VP3=SearchResult&VBID=2OPESQ5H3PBVY&SMLS=1&RW=1339&RH=868
Solar Eclipse, 2008
Total Solar Eclipse
VIDEO NUMBER: VE4884
http://sciencesourcevideo.com/video/detail/total-solar-eclipse2
Timelapse footage of the total solar eclipse of August 1, 2008. A total solar eclipse occurs when the moon passes in front of the Sun as seen from Earth, completely blocking its disk. The similarity in the apparent sizes of the bodies is a coincidence - the Sun is some 400 times wider, but is some 400 times further away. During a total eclipse the Sun's atmosphere or corona can be seen as a tenuous white halo. It is usually hidden by the glare of the solar disk. Totality lasted two minutes during this eclipse. Filmed from southern Siberia, in Russia. less
© Babak A. Tafreshi / Science Source
Duration: 00:11
File Size: 97 MB
Resolution:
1920x1080
John Glenn boards Friendship 7, 1962
John Glenn boards Friendship 7, 1962
VIDEO NUMBER: VE4415 LICENSE: RM
John Glenn boards Friendship 7, 1962. John Glenn boards the command module of the Friendship 7 spacecraft, on the Mercury-Atlas 6 (MA-6) mission launched from Cape Canaveral, Florida, USA. This was the third human spaceflight for the U.S. and launched on 20 February 1962 . Glenn (born 1921) piloted the mission and was the first American to go into Earth orbit. He performed three orbits of the Earth and splashed down in the Atlantic Ocean. He went on to become the he United States Senator for Ohio.
Model Release: No
Credit: NASA / SPL / Science Source
Duration: 00:55 File Size: 1,336 MB
Resolution:1280 x 720
Audio: No
http://sciencesourcevideo.com/video/detail/john-glenn-boards-friendship-7-1962
Nice Backhand!
Tennis player anatomy
VIDEO NUMBER: VB3006
LICENSE: RF
http://sciencesourcevideo.com/video/detail/tennis-player-anatomy11
Skeleton of a tennis player playing a backhand shot. The average adult human skeleton has around 206 bones. These bones meet at joints, the majority of which are freely movable. The skeleton also contains cartilage for elasticity. Ligaments are strong strips of fibrous connective tissue that hold bones together at joints, thereby stabilizing the skeleton during movement.
© Polymime Animation Co. / Science Source
Duration: 00:06
File Size: 187 MB
Resolution:
1920 x 1080
Zika Virus
Zika Virus (Flavivirus), animation
VIDEO NUMBER: VD2775 LICENSE: RM
An animation of the Zika virus, a mosquito-borne virus that is a member of the Flavivirus genus. The virus is responsible for Zika fever, an illness that causes symptoms similar to dengue fever including fever, rashes, joint pain, and conjunctivitis. However, women who are infected with the virus while pregnant are at risk of giving birth to children suffering from microcephaly, a neurodevelopmental disorder resulting from a reduced head size.
© Evan Oto / Science Source
Duration: 00:13 File Size: 151 MB Resolution: 1920x1080
http://sciencesourcevideo.com/video/detail/zika-virus-flavivirus-animation
Nanotube conducting electricity
VIDEO NUMBER: VC7745 LICENSE: RM
Animation of a carbon nanotube conducting electricity. The nanotube is made of a rolled-up sheet of graphene. Graphene is a form of carbon consisting of a flat sheet of hexagonal units. The layer is only one atom thick, and has unique chemical, physical and electrical properties that make it a subject of much research. It was first created in 2004.
© animate4.com/ SPL / Science Source
Duration: 00:14 File Size: 539 MB Resolution:1920x1080
http://sciencesourcevideo.com/video/detail/nanotube-conducting-electricity1
Pyramidal nerve cells
VIDEO NUMBER: VC5343 LICENSE: RM
Pyramidal nerve cells. Animation of nerve impulses traveling through pyramidal nerve cells, or neurons. Pyramidal cells are so named for their triangular cell bodies. Each cell body has numerous processes (dendrites), which collect and transmit information from other nerve cells and sensory cells. Each cell body also has an axon leading from it, through which it passes information to other cells. Pyramidal cells are found in the brain.
© animate4.com/SPL / Science Source
Duration: 00:19
File Size: 1,110 MB Resolution:1920x1080
http://sciencesourcevideo.com/video/detail/pyramidal-nerve-cells4
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