This section is about companies that design semiconductors.

For companies that manufature semiconductors, see also: company with a semiconductor fabrication plant.

They have been masters of second sourcing things for a long time! One can ony imagine the complexity of the Intel cross licensing deals.

This was the CPU architecure that saved AMD in the 2010's, see also: Video "How AMD went from nearly Bankrupt to Booming by Brandon Yen (2021)"

A "garbage patch" refers to a concentrated area of marine debris, primarily made up of plastic, that accumulates in certain parts of the world's oceans. The most commonly known garbage patch is the Great Pacific Garbage Patch, located between Hawaii and California. This area contains a high density of microplastics and other debris that have been carried by ocean currents. Garbage patches are not solid islands of trash but rather diffuse collections of small particles, with some larger pieces.

Marine current power refers to the energy generated from tidal and ocean currents. This renewable energy source harnesses the kinetic energy produced by the movement of water in oceans and seas. Marine current power is similar to wind energy, but instead of using wind to turn turbines, it uses flowing water. The process involves: 1. **Tidal Energy**: This is generated by the gravitational pull of the moon and the sun, leading to the rise and fall of sea levels.

The Weddell Gyre is a large system of ocean currents located in the Southern Ocean, specifically surrounding the Weddell Sea, which is situated off the coast of Antarctica. It is one of the major gyres of the Southern Ocean and plays an important role in global ocean circulation and climate.

The term "Quaternary South America" typically refers to the Quaternary Period in the geological time scale, which encompasses the last 2.6 million years up to the present. It is divided into two epochs: the Pleistocene and the Holocene. During this time, significant geological, climatic, and biological changes occurred, influencing the landscape, climate, and ecosystems of South America.

Quaternary paleontological sites refer to locations where fossilized remains of organisms from the Quaternary period are found. The Quaternary period is the most recent geological time period, spanning from about 2.6 million years ago to the present. It is characterized by significant climatic changes, the appearance of modern humans, and the extinction of many large fauna.

Chromaticity refers to the quality of a color that encompasses both its hue (the type of color) and its saturation (the intensity of the color). In other words, it describes how colors differ in their visual appearance and characteristics without considering their brightness or luminance. Chromaticity is often represented in a chromaticity diagram, which typically has two axes representing the color's hue and saturation.

Duplex perception refers to a phenomenon in auditory perception where a person can simultaneously perceive two different sound streams. This can occur when a single auditory input can be interpreted in two distinct ways, often due to conflicting information or overlapping sounds. A common example of duplex perception is found in certain types of speech sounds or auditory illusions, where a listener hears one sound, while at the same time, they may also sense an underlying or secondary sound that is either masked or obscured by the first.

The term "missing fundamental" refers to a phenomenon in auditory perception where the brain perceives a fundamental frequency even when it is not physically present in the sound wave. This occurs when the harmonic frequencies (overtones) are played, and the fundamental frequency is absent. For instance, if a musical note has a fundamental frequency of 100 Hz, it will produce overtones at frequency multiples of that fundamental (like 200 Hz, 300 Hz, etc.).

An isotopic signature refers to the distinct ratios of different isotopes of an element found in a sample. Isotopes are variations of an element that have the same number of protons but different numbers of neutrons, resulting in differing atomic masses. For example, carbon has stable isotopes such as Carbon-12 (^12C) and Carbon-13 (^13C), while its radioactive isotope is Carbon-14 (^14C).

Lutetium–hafnium (Lu-Hf) dating is a radiometric dating technique used primarily to date geological materials, particularly zircon minerals found in igneous and metamorphic rocks. This method is based on the decay of the radioactive isotope lutetium-176 (Lu-176) into hafnium-176 (Hf-176).

A vacancy defect, also known simply as a vacancy, is a type of point defect that occurs in crystalline solids. It refers to a missed atom in the crystal lattice structure where an atom or ion should be present. Essentially, a vacancy is an empty space where an atom is missing from its regular position in the crystal lattice.

In radiation therapy, a "bolus" refers to a tissue-equivalent material that is used to modify the dose distribution of radiation delivered to a patient. It is typically made from materials like water, gel, or specialized plastics that have similar attenuation properties to human tissue. The primary functions of a bolus in radiation therapy include: 1. **Surface Dose Enhancement**: Bolus brings the radiation dose closer to the skin surface, which is particularly important for treating superficial tumors.

The history of radiation therapy is rich and spans over a century, originating from early discoveries in physics and evolving into an established medical treatment. Here are key milestones in its development: ### Late 19th Century: Discovery of Radiation - **1895**: Wilhelm Conrad Röntgen discovered X-rays, which marked the beginning of the use of radiation in medicine.