Posts

If you’re traveling or you’ve run out of your data plan, you’ll want to download your favorite music to listen to offline. Thankfully, a number of music streaming apps offer this feature, hence allowing you to download music to your smartphone. Here are the best music download apps for Android and iOS. 1. Spotify Spotify is one of the most popular streaming services. It’s the best place to discover new music, boasting a great discovery engine where you’ll find new tracks to listen to....

That’s why, even though Google Chrome comes with Flash built-in, Flash is disabled by default on Google Chrome. This has pretty much made Flash obsolete on the web—but plenty of sites are lagging behind, and maybe you need to access one of those sites. Here’s how you can enable Adobe Flash Player in Chrome, and better yet, how to keep Flash disabled until you click on it to play. This prevents Flash from autoplaying when websites load, reducing the chance of malicious code executing before you can stop it....

By solving the equation, we obtain a mathematical expression, called wave function, which describe the probability of finding electrons at certain regions within an atom. This wave function can be described as atomic orbital. In simple words, atomic orbital refers to a region of space with a high probability of finding the electron. It is depicted as a three-dimensional region with a 95% probability of tracing an electron. On the contrary, the regions around the atomic nuclei where the likelihood of finding electrons is zero are referred to as nodes or nodal planes....

Examples Equation Thermal Conductivity According to kinetic theory, matter is made of particles that are in constant random motion. This motion manifests as thermal energy, which depends on the temperature. The higher the temperature, the higher the thermal energy. The motion of particles, whether translatory or vibrational, leads to collisions. The particles transfer energy among themselves. Consequently, heat travels from a high-temperature region to a low-temperature region. Where Q: Heat transfer rate (Js-1 or W) K: Thermal conductivity (Wm-1K-1) A: Cross-sectional area (m2) ( \frac{\Delta T}{\Delta x} ): Temperature gradient (Km-1) Suppose heat flows through a conductor of thickness d whose ends are at temperatures TA (hot) and TB (cold)....

The conservation of angular momentum is a fundamental concept of Physics to study objects in motion. The law of conservation of momentum states that “the total momentum of an isolated (closed) system is conserved as long as no external forces are acting on it.” By isolated system, we mean no matter is exchanged between the system and the surroundings. The conservation of momentum is most closely related to Newton’s third law....

Just like the skeletal system of our body, the cytoskeleton is the skeletal system of a cell. Like our skeletal system, it provides a structural framework to the cell, helping it move and carry out several other activities. Where is the Cytoskeleton Located Parts and Structure Functions: What does the Cytoskeleton Do Microfilaments Of the three types of cytoskeletal protein fibers, microfilaments are the narrowest, with a diameter of about 7 nm....

Receptors are broadly categorized into two types based on their location. They are intracellular receptors (found inside the cell) and cell-surface receptors (found in the plasma membrane). 1) Intracellular (Internal) Receptors 2) Cell-surface Receptors For example, the primary receptors for hydrophobic steroid hormones, such as the sex hormones estradiol (an estrogen) and testosterone, are intracellular. These receptors comprise three core domains: a ligand-binding domain, DNA binding domain, and an amino terminus (which interacts with the gene transcription machinery)....

There are around 117 million lakes covering about 4% of earth’s total land surface. Finland alone is home to 1,87,000 lakes, so it is also known as ‘The Land of a Thousand Lakes.’ The Caspian is the world’s largest inland lake located in central Asia, having an area of 386,000 square km. How Many Different Types of Lakes Are There 1. Meteorite Lakes 2. Tectonic Lakes 3. Volcanic Lakes 4....

It is found in both prokaryotes and single-celled and multi-celled organisms eukaryotes. Some other characteristics of asexual reproduction are: The organisms multiply and grow fastHave a short generation timeFertilization of the gametes does not occur Types of Asexual Reproduction Advantages of Asexual Reproduction Disadvantages of Asexual Reproduction 1. Binary Fission Prokaryotes reproduce through binary fission, especially bacteria, archaea, and certain protozoans. The term ‘fission’ means to divide. Thus, in binary fission, the parent organism divides equally into two parts, each developing into a complete individual....

They are fundamental particles and thus cannot be broken down into smaller ones. They are named gluons because these particles function as the ‘glue’ that holds the nucleus and its constituent baryons together. A Feynman diagram often represents gluon interactions. The emitted gluons are shown as helices that generate a color change for the quarks. They are assumed to be bi-colored, carrying a unit of color and a unit of anti-color....

Two English scientists, Michael Faraday and James Clerk Maxwell, have made significant discoveries in electromagnetism. How is the Magnetic Force Measured? Examples of Magnetic Force Uses and Applications of the Magnetic Force Electric and Magnetic Forces Here, F is represented as a vector, and v x B is the cross product of v and B. In terms of its magnitude, suppose θ is the angle between v and B, then F = q v B sin θ If v and B are at 90 degrees, then the above equation simplifies to F = q v B Unit of magnetic force: Newton or N....

Conditions suitable for the formation of metamorphic rocks are found deep within the Earth or where tectonic plates meet. They can be smooth or rough, depending on the mineral composition. Where are they Found Types Metamorphic Rocks Examples How Are Metamorphic Rocks Formed Uses of Metamorphic Rocks Fun Facts for Kids 1. Foliated Sedimentary Rocks Foliated rocks are rocks that possess a layered appearance. They are formed through extreme pressure in conjugation with heat, which helps elongated minerals attain a foliated pattern, known as foliation....

Location Structure Formation Functions The red blood cells (RBCs), human embryonic kidney cells, neurons, and sperm cells are examples of specialized unique actin cytoskeletal structures adjacent to the plasma membrane. Like microtubules, all the subunits of microfilaments are connected in the same orientation, thus exhibiting polarity having a positive or plus (+) end and a negative or minus (-) end. The positive or the fast-growing end is barbed, while the negative or slow-growing end is pointed....

The word ‘neutron’ was derived from the Latin word ‘neuter’, meaning neither, and the Greek suffix ‘on’ is consistent with the names of all sub-atomic particles, including proton and electron. Who Discovered Neutron Where are they Located What are Neutrons Made of Characteristics Charge: Unlike proton and electron, the neutron has no charge. In other words, they are electrically neutral and thus are represented as n0. Here, ‘0’ stands for zero charges....

Parts and their Morphology How do They Respire Similar to plants, during daytime Spirogyra takes in carbon dioxide dissolved in water to release a relatively large volume of oxygen using specialized cells called stomata. The released oxygen remains trapped as tiny bubbles between the tangling strands of their filamentous body that helps them to float in water and become visible as a slimy green mat. At night and on overcast days, the process reverses, as Spirogyra consumes oxygen and produces carbon dioxide as a metabolic waste product of cellular respiration....

Historically, Stokes’ law has been named after Anglo-Irish physicist and mathematician George Gabriel Stokes after he derived the expression for drag force in 1851. Stokes’ Law Equation Assumption of Stokes’ Law Derivation of Stokes’ Law Stokes’ Law and Settling Velocity Applications of Stokes’ Law Limitations of Stokes’ Law Fd = 6πηrv Where, η is the viscosity of the fluid r is the radius of the particle v is the velocity of the particle relative to the fluid SI Unit: Newton or N...

Tension Force Examples Tension Formula Tension Problems Tension vs. Compression Suspension of a pendulum bobAn object suspended by a pullyPulling a sleigh by huskies and reindeerPlucking a guitar stringStretching the musclesA swing in a playgroundElevator suspended by a cableSpring in a watchSuspension bridgeSeat belt T = FA If a string suspends an object of mass m, then the tension is given by, T = mg Where, g is the acceleration due to gravity....

How Many Different Types of Rocks Are There Properties & Characteristics: Dense, hard, and crystalline; rocky streamlined flow structures with no layers; not affected by chemical corrosion Examples: Granite, basalt, andesite, gabbro, obsidian, diorite, scoria, tuff, pumice Uses: In construction of buildings, flooring, interior decoration (granite); as abrasive (pumice); in production of concrete (basalt) Examples: Granite, gabbro, diorite Magma comes out through a volcano as lava, cools rapidly and forms small rock crystals Examples: Basalt, andesite, obsidian, pumice, rhyolite Properties & Characteristics: Crumbles easily, can be scratched by fingernails; grainy texture due to layers of sand, silt or gravel; varying sizes of crystals Examples: Sandstone, conglomerate, chalk, claystone, breccias, shale, calcite, siltstone Uses: As a construction material (sandstone); production of chalk, lime, industrial carbon dioxide, cement, and in glassmaking (limestone); brick making and as base material under roads (shale) Examples: Sandstone, conglomerate Examples: Rock salt, iron ore, halite (common salt) Examples: Coal, limestone Properties & Characteristics: Lightweight, glassy appearance; relatively hard, but still easy enough to break; layered or foliated structure made up of crystals of the same size Examples: Gneiss (from granite), Amphibolite (from basalt), Quartzite (from quartz) Uses: Writing board (slate); flooring and sculpture material (marble); ballast in railroad construction (amphibolite) Examples: Gneiss, phyllite, schist, and slate Examples: Marble, hornfels and quartzite

The term ‘amoeba’ is derived from the Greek word ‘amoibe’ meaning ‘change’. German naturalist August Johann Rösel von Rosenhof discovered and described amoeba in 1755. How Do They Eat They catch food such as algae, bacteria, plant cells, microscopic protozoa, and metazoans through absorption using pseudopodia, a process termed phagocytosis. This mode of nutrition in amoeba is called holozoic nutrition where the food particles are engulfed to form a vacuole around it....

They exist in both gram-positive and gram-negative bacteria. The capsule is immediately above the murein (peptidoglycan) layer of gram-positive bacteria such as Streptococcus pneumonia. In gram-negative bacteria such Haemophilus influenzae, Neisseria meningitidis, Klebsiella pneumoniae, and Escherichia coli, capsules are found above the outer membrane (lipopolysaccharide layer). How are Bacterial Capsules Visualized What Are They Made Of Functions of Bacterial Capsule The capsule appears like a mesh or network of fine strands under an electron microscope....