What is edge dislocation? #veritasium #Science #physics #materials

What is edge dislocation? #veritasium #Science #physics #materials

Watch this video on TikTok →

Video metrics

Topic context

This video sits under the TikTok hashtag #science, a theme with strong pull in humanities and technology content. We group videos from the same hashtag so you can compare how different creators approach it.

More videos on this topic

• science@
• How Do You Drive a 50-Ton Steel Pile Into the Ground?#fyp #foryou #3danimation #Science@Outdoor.998
• how a car works the simple way #engineering #howitworks #Science #learnontiktok #learnwithtiktok@selfmade.engineer
• Science#LearnFacts#HowItWorks#LearnOnTikTok#Facts@233snski
• How is swimming pool water cleaned? #knowledge #popular #Science #Content@Emina Glenn
• Another fun experiment to do with your kids! Plus you can eat the orange when you’re done! #Science #magic #momtok #howto #LifeHack@🦕 Rawr It’s Paige 🦖
• Panspermia is the hypothesis that life on Earth did not originate spontaneously (abiogenesis) but was instead brought here from outer space in the form of biological "seeds." This idea proposes that microorganisms, extreme-resistant spores, or complex organic precursors are capable of traveling through interplanetary or interstellar space aboard comets, meteorites, and cosmic dust. Upon landing in favorable conditions on a new planet, these cosmic hitchhikers can initiate biological evolution. Notably, panspermia does not solve the mystery of how life initially emerged in the universe; it merely shifts the starting point of genesis from early Earth to another cosmic location. Within the scientific community, the concept is generally divided into two main categories: natural (lithopanspermia) and directed (intentional). Lithopanspermia suggests that rock fragments blasted off the surface of a life-bearing planet (such as ancient Mars) by powerful asteroid impacts can drift through the vacuum of space and accidentally collide with other celestial bodies. This theory is supported by actual discoveries of Martian meteorites on Earth (like ALH 84001) and the proven extreme resilience of certain terrestrial organisms — such as tardigrades, Deinococcus radiodurans bacteria, and fungal spores — which can survive years of cosmic radiation, hard vacuum, and freezing temperatures, while also enduring the crushing pressures and heat of atmospheric entry. Conversely, directed panspermia—a concept famously co-proposed by DNA co-discoverer Francis Crick—explores the scenario where life was intentionally sent to a young Earth by an advanced alien civilization. In the 21st century, as amino acids and complex hydrocarbons are continuously found inside comet tails and meteorites (such as the Murchison meteorite), a variant known as pseudopanspermia (or molecular panspermia) has gained significant traction. This view argues that space delivers not living organisms, but ready-made organic building blocks, which dramatically accelerated chemical evolution in our planet's primordial oceans. #scary #facts #life #Science@ʜᴏʟᴠᴇᴋ
• Is oxygen magnetic? Dr. Tatiana Erukhimova @TAMU Physics & Astronomy performs an experiment to demonstrate. #experiment #Science #physics #oxygen #STEMTok@NOVA PBS
• Bacteria Flagellar Motor #learnontiktok #intelligentdesign #evolution #molecular #nanomachine #learning #funfacts #biotok #Science #stem #3danimation #atp #biochemistry #coolscience #simulation #atpsynthase #ATP #blender3d A cut-open E. coli slice simulated based on real structures and biology, every molecule you see is a real one: its shape was worked out atom by atom by scientists,using electron microscopes ,X-ray crystallography et al. Everything is drawn to true scale; only time is slowed, about 200×.The sound is not REAL though :) The yellow machine is the flagellar motor: a rotor about 50 nm across, driven by protons flowing through its stator units, turning the hook and filament at ~100 turns per second. Watch how the singal travel to falgelar motor. The teal structures at the lower right are the cell’s “nose” (chemoreceptor array): they sense what’s outside. When the "smell" (for example, nutrient molecules) changes, a protein at their base hands a chemical tag (phosphorylation) to a small messenger. The tagged messenger (orange, cheY) drifts across the cell and latches onto the bottom ring of the motor. When enough of them are attached, the ring flips — the flash is the switch — and the motor runs backwards. Backwards, the propellers fly apart and the cell tumbles; forwards again, it sets off in a new direction. That’s how a cell with no brain finds its way to food. Also in the picture: two more rotary machines (ATP synthase)at the upper left that make the cell’s fuel from the same ion current, a pump that throws out toxins, DNA being copied, a ribosome building a protein, and the three-layer wall with its sugar forest on the outside.@iJEP Studio
• The creation of the blue LED was a technological dead end for over 30 years due to the fundamental physics of light. A diode's color depends on the semiconductor's energy levels: red and green require narrow-bandgap materials, which are relatively easy to synthesize. In contrast, blue light has a short wavelength and high energy, demanding a wide-bandgap semiconductor — specifically gallium nitride (GaN) — which scientists did not know how to process for decades. The primary hurdle lay in growing defect-free GaN crystals and establishing a layer with p-type conductivity. For years, researchers failed to make the material conduct electricity efficiently because hydrogen atoms locked the doping magnesium in place. The breakthrough came from Japanese physicists Isamu Akasaki, Hiroshi Amano, and Shuji Nakamura, who managed to grow clean crystals, activate p-conductivity using heat, and utilize quantum wells to achieve ultra-bright emission. This invention revolutionized the world because without a blue LED, it was impossible to create white light. By coating a blue chip with a yellow phosphor or combining it with red and green (the RGB system), humanity finally developed energy-efficient LED bulbs and modern color screens for smartphones and TVs. For this monumental leap, the creators were awarded the Nobel Prize in Physics in 2014. #Science #education #facts #physicstok@ʜᴏʟᴠᴇᴋ
• Your body rebuilds liver, bone, skin, muscle. Not your heart. A zebrafish rebuilds its entire damaged heart in 60 days. No scar. A Dutch lab found the difference; a protein called Hmga1. And the gene for it is in you. It built your heart before you were born, then switched off. They turned it back on in mice. The muscle repaired. Real Discovery. What you were not told. #realdiscovery #heartregeneration #hearthealth #hiddennews #Science@Real Discovery
• Atom interferometry overview. Comment what ___Tok we should call this #physics #Science #stem #atomic@hunterorionswan