Transport
Discover facts about transport. Small discoveries that change the way you see familiar things.
Transport
TCP starts a conversation with a three-step handshake
One computer asks to open a connection, the other acknowledges and replies, and the first confirms. That exchange establishes the starting information both…
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Microchips transport internal data using two simple lines
On a two-wire serial bus, one line carries the data and the other carries the clock that tells chips when to read each bit. Devices take turns sending small…
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Neutrinos carry away almost all a supernova's energy
When a star’s core collapses, light gets trapped in the dense material. Neutrinos interact so weakly that they stream out, carrying roughly 99 percent of the…
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Diagnostic ping transport simply asks if servers are alive
A ping sends a tiny request to a server and waits for the reply. That tells the network the machine is reachable, not whether it’s doing useful work—digital…
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The email setting that quietly deletes server copies
With POP email, turning off “leave a copy on server” tells your mail app to download messages and delete the originals from the server. Your inbox gets the…
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The internet runs on networks trusting each other
Each internet provider tells neighboring networks which routes lead to which addresses. Those neighbors pass the directions onward, so data hops from network…
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How perfume crosses an entire room
Perfume molecules drift through the air, and tiny air currents carry them across the room. Your nose gets the message before the scent has finished its grand…
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Some encryption turns easy multiplication into a hard puzzle
RSA starts with large prime numbers whose product is easy to calculate but difficult to split back into its factors. The public key can be shared while the…
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High speed hardware transport multiplexes video and raw data
Multiplexing gives video and raw data turns on one high-speed connection, marking each piece so the receiver sorts it back out. It’s a digital carpool: one…
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Early packet transport required continuous state connections
Some early packet networks used virtual circuits: a route was set up first, and network switches kept track of the connection as packets crossed them. The…
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Birefringent crystals transport light at two unique speeds
Inside a birefringent crystal, light meets different speeds depending on its polarization—its direction of vibration. The crystal splits one beam into two,…
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Multicast routing transports one video stream to thousands
Instead of sending a separate video to every viewer, multicast sends one stream through the network, then copies it only where routes branch. Thousands of…
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How Earth sheds heat into space
Earth's warm surface sends infrared energy upward; some escapes through the atmosphere into space. The planet mails its heat as light, because space has no…
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Why electricity arrives before electrons
Electrons drift along a wire like a crowd shuffling through a doorway, but the electrical signal travels through the circuit close to the speed of light.…
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Crystals transport thermal energy via quantized sound waves
In a crystal, neighboring atoms vibrate and pass energy through the solid. Those vibrations come in quantized packets called phonons, so heat travels more…
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Network routing transports users to the nearest server clone
Web services keep copies of content on servers in different locations. Network routing sends a request toward a nearby copy, cutting the distance data…
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Magnetic fields directly transport charged conductive fluids
A magnetic field pushes on the electric current inside a conductive fluid, driving the whole liquid forward. That’s a pump with no spinning blades—just…
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Birds keep attacking delivery drones
A drone hovering near a nest looks like an intruder, so defensive birds swoop in to chase it off. To the bird, the delivery service has arrived without an…
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Center consoles slide to act as elbow armrests
The console slides forward or back so the armrest meets your elbow instead of leaving it stranded in midair. A tiny adjustment, and your arm stops auditioning…
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Toy hauler RVs turn their rear wall into a loading ramp for dirt bikes
The rear wall drops down on hinges to become a ramp, so dirt bikes roll straight into the RV’s garage. Once the bikes are aboard, the ramp swings up and seals…
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Your gas pedal is only making a request
Pressing the pedal moves a sensor, not a cable directly opening the engine’s throttle. The computer reads that signal and adjusts power while managing…
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License plate frames hide essential legal text
A plate frame overlaps the edges of the license plate, where state names or registration details sit. That decorative border turns a readable plate into a…
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Why car wheel wells are lined with felt
The wheel-well liner catches sharp tire noise and takes the sting out of stones kicked up from the road. That soft-looking fabric is doing a bouncer’s job:…
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Window tint is merely a cheap polyester film
The glass stays ordinary; a coated polyester sheet does the filtering. Its thin layers cut glare and sunlight for a fraction of the drama of installing…
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