Curated Video
Electron Energy: Deriving the Expression
Bohr's model of the atom says that an electron's energy is set by its orbit around the nucleus. Bohr said that electrons have specific, quantised levels of energy, and that the size of the orbit affects the energy level. An electron's...
Curated Video
Atomic Orbits: Calculating the Radius
Bohr's atomic model postulates that the radius of an electron's orbit around the nucleus is determined by the concept that electrons travel in quantised orbits with distinct and well-defined radii. According to the model, the angular...
Curated Video
Rutherford's Atomic Revelation: The Nuclear Model
Ernest Rutherford's Nuclear Model of the Atom: A Transformative Journey Background and Experiment • J.J. Thomson's Plum Pudding Model, a sphere of diffuse positive charge with negatively charged electrons, was the dominant model before...
Curated Video
Rutherford's Gold Foil Experiment: Peering into the Nucleus
Ernest Rutherford's Gold Foil Experiment: A Revolutionary Study Background and Experiment Design • Rutherford and his colleagues conducted an experiment to probe the structure of the atom. • The experiment involved alpha particles, a...
Curated Video
Discovery of Proton & Neutron
Discovery of the Proton and Neutron Background: • J.J. Thomson's 1897 discovery of the electron led to the development of atomic models. • Ernest Rutherford's Gold Foil Experiment (1911) revealed the presence of a dense, positively...
Curated Video
Fundamental unit of matter - Atom
Understanding Atoms in Chemistry and Physics • Atoms are fundamental building blocks of matter. • Understanding atoms is crucial for chemistry and physics principles. • The concept of atoms dates back to ancient Greece. • Scientific...
Astrum
The Beguiling Opportunity That Appears Twice in a Lifetime: Halley Armada
The Halley Armada, Giotto, Vega 1 and 2, Suisei and Sakigake, all visited Halley's Comet at roughly the same time in 1986. What did they discover? Why was this such a groundbreaking mission?
Curated Video
Vibranium and the Periodic Table
After giving an explanation of the Periodic Table, Dr. Boyd explains where he thinks the fictitious metal Vibranium would be located on the Periodic Table if it were a real element. What do you think…where should Vibranium go on the...
Curated Video
The Periodic Table
The year 2019 is celebrated as the International Year of the Periodic Table (#IYPT) in recognition of its discovery 150 years ago in 1869. Listen along as Dr. Boyd gives a detailed explanation of its arrangement and what all the letters...
Science ABC
What is Radioactivity and Is It Always Harmful: Explained in Really Simple Words
Radioactivity is the property through which a heavier, unstable nucleus assumes a more stable state by emitting radiation. The process through which a nucleus turns into a stable one is called radioactive decay. But is radioactivity or...
Science ABC
What Happens If You Try To Shoot Down A Nuclear Missile Mid-Air?
It’s highly unlikely to shoot down a missile mid-air. But there's more to it than that! Causing a nuclear bomb to detonate requires a precise orchestration of events, without which the chain reaction does not initiate and the bomb...
Science ABC
What Are Valence Electrons And How To Find Them?
Valence electrons are the electrons that are located in the outermost shell of an atom. In other words, these are the electrons that can be gained or lost during a chemical reaction. In order to determine the number of valence electrons...
Science ABC
Why Is The Periodic Table Arranged The Way It Is?
The periodic table is arranged by atomic number, which is the number of protons in an element’s nucleus. The elements are arranged in order of increasing atomic number. The periodic table is also arranged by groups and periods. The...
Curated Video
Cell nucleus: structure and function
The nucleus is one of the most important organelles found in eukaryotic cells. In this video, we will cover the definition, structure and functions of the cell nucleus.
Curated Video
Electron shell
An orbit around the nucleus of an atom that can be occupied by one or more electrons. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...
Curated Video
Isotope
Atoms of the same element with different numbers of neutrons. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...
Curated Video
Haploid
A cell that has half the number of chromosomes as normal body cells, containing a single set of unpaired chromosomes. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
Curated Video
Nuclear fusion
A nuclear reaction in which two atomic nuclei fuse to form a larger one. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...
Curated Video
Alpha particle
A type of particle produced in some types of radioactive decay, being one of the most widespread forms of ionising radiation. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise...
Curated Video
Nuclear Fission: Splitting the Atom
The splitting of an atomic nucleus into lighter fragments. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...
Curated Video
Nucleus (chemistry)
In an atom, the small, dense, positively charged structure at its centre, containing the protons and neutrons. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
Curated Video
Mitosis
The process by which cells can divide to produce two genetically identical cells. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary...
Curated Video
Prokaryote
Organisms whose cells lack a nucleus and other membrane-bound structures. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...
Curated Video
Atom
The building blocks of all matter, being the smallest unit that retains the chemical properties of an element. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...