edgepedia

Technology and the built world

61,984 articles

See's Candies

See's Candies, also known as See's Candy, is an American maker of boxed chocolates founded in 1921 in Los Angeles and owned by Berkshire Hathaway since 1972.

Seed drill

A seed drill, also called a grain drill, is a farm implement that sows seed at a set depth and in evenly spaced rows, replacing hand broadcasting.

Seed-TTS

Seed-TTS is a family of large-scale speech generation models from ByteDance's Seed team, first described in June 2024, that clones a speaker's voice from a few seconds of reference audio.

Seed1.5-VL (ByteDance)

Seed1.5-VL is a proprietary vision-language foundation model developed by ByteDance's Seed team and released in May 2025, served only through Volcano Engine and retired in March 2026.

Seedance

Seedance is a family of text-to-video and multimodal audio-video generation models developed by ByteDance's Seed team, first released in 2025 and expanded through the 2.0 and 2.5 generations in 2026.

Seedance 2.0 copyright controversy

The Seedance 2.0 copyright controversy is a February 2026 dispute in which Hollywood's major studios accused ByteDance's AI video model of generating unauthorized clips of copyrighted characters and real actors.

Seedance 2.5

Seedance 2.5 is a video generation model released by ByteDance's Seed team on July 31, 2026, known for single-pass 30-second clips with synchronized audio and up to 50 reference inputs.

Seedream

Seedream is a family of closed-weight text-to-image and image-editing models developed by ByteDance's Seed research team, first documented with Seedream 2.0 in early 2025 and positioned among the quality leaders in commercial image generation through 2026.

Seedream 4.0

Seedream 4.0 is a text-to-image generation and image-editing model released by ByteDance's Seed team on September 9, 2025, notable for unifying both tasks in a single architecture and briefly topping third-party image-generation leaderboards.

Seeed Studio

Seeed Studio is an open-source hardware provider in Shenzhen, China, founded by Eric Pan in 2008, offering Grove modular electronics, XIAO development boards, and prototype-to-production manufacturing services.

Seeed Studio XIAO

The Seeed Studio XIAO is a series of thumb-sized microcontroller development boards by Seeed Studio, all in one 21 × 17.8 mm form factor and spanning chips from Espressif, Nordic, Raspberry Pi, and Microchip.

Seek time

Seek time is the time a hard disk drive takes to move its read/write heads to the track holding the requested data, typically around 5 to 10 milliseconds.

Seelonce Mayday

Seelonce Mayday is the maritime radiotelephony signal, defined in Article 32 of the ITU Radio Regulations, that imposes radio silence on stations interfering with distress traffic until the controlling station lifts it with SEELONCE FEENEE.

Seepage analysis

Seepage analysis is the geotechnical method that models water flow through soil and rock in embankment dams, levees, and foundations, computing flow rates, hydraulic gradients, and pore water pressures.

Seeram Ramakrishna

Seeram Ramakrishna is a Singapore-based materials scientist and mechanical engineer known for electrospun nanofibres, wearable energy storage, and the circular economy, spending three decades at NUS.

Sefaattin Tongay

Sefaattin Tongay, who publishes as Seth Ariel Tongay, is a materials scientist and professor at Arizona State University known for work on 2D materials and Janus semiconductors.

SeFi-Image

SeFi-Image is a text-to-image model family released in June 2026, built on Semantic-First Diffusion, a two-stream latent diffusion design that denoises semantic structure ahead of texture detail.

SEFOR

SEFOR, the Southwest Experimental Fast Oxide Reactor, was a 20 MW experimental sodium-cooled fast reactor near Strickler, Arkansas, operated from 1969 to 1972 to measure the Doppler reactivity effect.

Sega CD

Sega CD, also known as Mega-CD, is a CD-ROM add-on for the Sega Genesis sold from 1991, adding FMV games and prompting the 1993 Senate hearings behind the ESRB.

Sega Pico

The Sega Pico, or Kids Computer Pico, is an educational video game console from Sega, released in Japan in 1993 and marketed as an electronic picture book.

Segment (company)

Twilio Segment (formerly Segment.io), founded 2011 by Peter Reinhardt and three cofounders in San Francisco, is a customer data platform routing customer events via one API; Twilio acquired it in 2020 for about $3.2 billion in stock.

Segment Anything Model (SAM)

The Segment Anything Model (SAM) is a promptable image-segmentation model released by Meta AI in April 2023, with the SA-1B dataset of over 1.1 billion masks; SAM 2 extended it to video in 2024.

Segment display

A segment display is an electronic display that forms characters by switching fixed pre-shaped segments on and off, typically seven bars per digit showing 0 through 9.

Segment routing

Segment routing (SR) is a source-routing network architecture, standardized by the IETF in RFC 8402 in 2018, that steers packets through ordered lists of instructions called segments.

Segment routing over IPv6

Segment routing over IPv6 (SRv6) is a network architecture, defined in RFC 8402 and RFC 8986, that encodes an explicit end-to-end path as a list of instructions in IPv6 headers.

Segmental bridge

A segmental bridge, also called a segmental concrete bridge, is a concrete bridge whose deck is built from short segments joined by post-tensioning, first used in Europe in the 1950s.

Segmental lining (tunnel)

A segmental lining is a tunnel wall built from precast reinforced-concrete segments erected ring by ring behind a tunnel boring machine, serving as the permanent support of shield-driven tunnels.

Segmentation fault

A segmentation fault, also called an access violation, is a fault raised when a program accesses memory it is not permitted to access, usually terminating it.

SegNet

SegNet is an encoder-decoder neural network for pixel-wise image segmentation proposed in 2015 by Vijay Badrinarayanan, Ankur Handa, and Roberto Cipolla of the University of Cambridge.

Segregation (materials science)

Segregation in materials science is the nonuniform spatial distribution of solute atoms in an alloy, occurring during solidification or at grain boundaries, where it can cause embrittlement.