
Rivers are surface water masses that move along the slope of the Earth’s surface under the influence of gravity and follow a defined channel. Rivers that originate from a source and flow into a sea, lake, or another river are active components of the hydrosphere. These systems, formed by surface runoff, play fundamental roles in shaping the land surface and sustaining the water cycle.General CharacteristicsRivers flow either continuously or seasonally. Continuous rivers exhibit a consistent disc
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İbrahim Filiz

A river is a natural watercourse fed by rainfall, snowmelt, or spring waters; it flows continuously within a defined channel and typically reaches seas, lakes, or other rivers.Key CharacteristicsRivers originate at a point known as the "source." As they flow, they gather smaller tributaries such as streams and brooks, increasing in volume and discharge. Ultimately, they empty into a sea, lake, or other body of water at a point called the "mouth."Parts of a RiverA river consists of three main par
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İbrahim Filiz

Laser beam welding (LBW) is an advanced welding method that melts and joins metallic or non-metallic materials by focusing a high-intensity, single-wavelength laser beam onto a specific point.In this method, the energy generated by the laser creates a localized molten zone (weld pool) on the material’s surface, and the welding process is completed as the material solidifies through self-cooling.Laser welding is a non-contact process; since no electrode, arc, or filler wire is used, there is no m
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Samet Şahin

Orhan Kaynak (1 March 1970, Adana – 10 March 2026, Trabzon) was a Turkish former professional footballer and football coach. He played as a forward throughout his youth and active career, and after retiring from playing, he took on assistant coaching and head coaching roles with various clubs. During his playing years, he was known by the nickname “Küçük Orhan” to distinguish him from another footballer in the Trabzonspor squad with a similar name. Early Life and Family Born on 1 March 1970 in t
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Burak Enes

Friction Welding is a welding method that joins materials in the solid state without melting. In this process, frictional heat generated by mechanical energy between two workpieces raises the material temperature to its plastic deformation range. The welding operation involves rotating one or both parts to generate heat at the interface, followed by the application of axial pressure to achieve bonding. Since no melting or solidification occurs, friction welding produces metallurgically more stab
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Samet Şahin

Those Who Recorded History: VakanüvislerVakanüvis is the term used in the Ottoman State for historians tasked with documenting significant events. The word originates from Arabic and means "one who writes down events." Vakanüvisler, with the sultan’s permission, recorded daily state affairs, wars, major decisions, and transformations, leaving behind documented records for future generations.How Did Vakanüvislik Emerge?The role of vakanüvis became an official profession in the Ottoman State from
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Mustafa Cem İnci

What Is an Archive?An archive is a place where information, documents, and records from the past are systematically stored. Archives contain documents that help us understand historical events, individuals, institutions, and societies.Types of Archives- State Archives: Institutions that store official documents.- Private Archives: Contain documents belonging to individuals or private organizations.- Institutional Archives: Preserve records of institutions such as schools, hospitals, and associat
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Mustafa Cem İnci

At the core of the triple conception emerging in the concept of the individual lies the idea of a source upon which both the individual and external objects depend. Therefore, let us first examine the notion of “source.”What Is a Source?In Turkish, “kaynak” means the point of origin, beginning, or cause of something—like the spring from which a river emerges. As long as it remains connected to its source, the existence of that thing cannot be extinguished. Thus, “source” is not merely a static f
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Lale Alp