Big Bang Theory
TWIG. (n.d.). Big Bang Theory [Video file]. Retrieved from https://www-twig-world-com.db.plcscotch.wa.edu.au/film/big-bang-theory-852/
NB: Video requires Google Chrome or Safari to view.
The Large Hadron Collider
TWIG. (n.d.). The Hadron Collider [Video file]. Retrieved from https://www-twig-world-com.db.plcscotch.wa.edu.au/film/large-hadron-collider-861/
NB: Video requires Google Chrome or Safari to view.
The Satellite Story
TWIG. (n.d.). The Satellite Story [Video file]. Retrieved from https://www-twig-world-com.db.plcscotch.wa.edu.au/film/the-satellite-story-872/
NB: Video requires Google Chrome or Safari to view.
Large Hadron Collider
- Large Hadron Collider (LHC). (2017). In Encyclopædia Britannica. Retrieved from http://school.eb.com.au.db.plcscotch.wa.edu.au/levels/high/article/Large-Hadron-Collider/471193
Large Hadron Collider (LHC), world’s most powerful particle accelerator. One goal of the LHC project is to understand the fundamental structure of matter by re-creating the extreme conditions that occurred in the first few moments of the universe according to the big-bang model.
Cosmos
- NASA. (2107). Physics of the Cosmos. Retrieved from https://pcos.gsfc.nasa.gov/science/darkenergy.phpThe discovery that the expansion of space is accelerating presents one of the most important scientific problems of our time. The implication that the universe is dominated by an unknown entity, now called "dark energy," that counters the attractive force of gravity, may revolutionize our understanding of cosmology and fundamental physics.
- Urone, P. & Hinrichs, R. (2012). College Physics: Dark matter and closure. Retrieved from https://courses.lumenlearning.com/physics/chapter/34-4-dark-matter-and-closure/One of the most exciting problems in physics today is the fact that there is far more matter in the universe than we can see. The motion of stars in galaxies and the motion of galaxies in clusters imply that there is about 10 times as much mass as in the luminous objects we can see.
Introduction
"Astronomy, science that encompasses the study of all extraterrestrial objects and phenomena. Until the invention of the telescope and the discovery of the laws of motion and gravity in the 17th century, astronomy was primarily concerned with noting and predicting the positions of the Sun, Moon, and planets, originally for calendrical and astrological purposes and later for navigational uses and scientific interest. The catalog of objects now studied is much broader and includes, in order of increasing distance, the solar system, the stars that make up the Milky Way Galaxy, and other, more distant galaxies." (Britannica, 2017)
Gravity
- The Physics Classroom. (2017). Gravity. Retrieved from http://www.physicsclassroom.com/class/circles/Lesson-3/Gravity-is-More-Than-a-Name
Gravity is a force that exists between the Earth and the objects that are near it. As you stand upon the Earth, you experience this force. We have become accustomed to calling it the force of gravity and have even represented it by the symbol Fgrav. Most students of physics progress at least to this level of sophistication concerning the notion of gravity. - Gravity. (2017). In Encyclopædia Britannica. Retrieved from http://school.eb.com.au.db.plcscotch.wa.edu.au/levels/high/article/gravity/106265Gravity, also called gravitation, in mechanics, the universal force of attraction acting between all matter. It is by far the weakest known force in nature and thus plays no role in determining the internal properties of everyday matter. On the other hand, through its long reach and universal action, it controls the trajectories of bodies in the solar system and elsewhere in the universe and the structures and evolution of stars, galaxies, and the whole cosmos.
Satellites - Planets - NASA
- NASA. (2014, February 4). What Is a satellite?. Retrieved from https://www.nasa.gov/audience/forstudents/5-8/features/nasa-knows/what-is-a-satellite-58.htmlA satellite is a moon, planet or machine that orbits a planet or star. For example, Earth is a satellite because it orbits the sun. Likewise, the moon is a satellite because it orbits Earth. Usually, the word "satellite" refers to a machine that is launched into space and moves around Earth or another body in space.
- Satellite communication. (2017). In Encyclopædia Britannica. Retrieved from http://school.eb.com.au.db.plcscotch.wa.edu.au/levels/high/article/satellite-communication/65845Satellite communication, in telecommunications, the use of artificial satellites to provide communication links between various points on Earth. Satellite communications play a vital role in the global telecommunications system. Approximately 2,000 artificial satellites orbiting Earth relay analog and digital signals carrying voice, video, and data to and from one or many locations worldwide.
- The Physics Classroom. (2017). Circular Motion Principles for Satellites. Retrieved from http://www.physicsclassroom.com/class/circles/Lesson-4/Circular-Motion-Principles-for-SatellitesThe motion of an orbiting satellite can be described by the same motion characteristics as any object in circular motion. The velocity of the satellite would be directed tangent to the circle at every point along its path. The acceleration of the satellite would be directed towards the center of the circle - towards the central body that it is orbiting. And this acceleration is caused by a net force that is directed inwards in the same direction as the acceleration.
Meteors
- Weise, E.(2013, November 7). Nearby meteors not so rare, scientists find. USA Today.The number of meteorites near Earth roughly the size of the space rock that exploded over Russia in February may be up to 10 times greater than believed, three new papers out Wednesday suggest.
The massive fireball caused an intense flash of blinding light at daybreak on Feb. 15 near the Russian city of Chelyabinsk. The meteorite shattered glass for 75 miles and injured 1,619 people.
In the journals Nature and Science, researchers suggest the meteorite caused an airburst the equivalent of 500 kilotons of TNT. The atomic bomb used on Hiroshima had an impact of 13 kilotons of TNT.
One of the Nature papers looked at records of all the objects that had hit the Earth in the past 40 years and found many more instances than expected, says co-author Peter Brown, a professor who studies the physics of meteors at the University of Western Ontario in Canada. - Talbert, T. (2017, June 30). NASA’S First Asteroid Deflection Mission Enters Next Design Phase. Retrieved from https://www.nasa.gov/feature/nasa-s-first-asteroid-deflection-mission-enters-next-design-phase“DART is a critical step in demonstrating we can protect our planet from a future asteroid impact,” said Andy Cheng of The Johns Hopkins Applied Physics Laboratory in Laurel, Maryland, the DART investigation co-lead. “Since we don’t know that much about their internal structure or composition, we need to perform this experiment on a real asteroid. With DART, we can show how to protect Earth from an asteroid strike with a kinetic impactor by knocking the hazardous object into a different flight path that would not threaten the planet.”
- University of Ontario. (2011, December 14). Meteor physics. Retrieved from http://meteor.uwo.ca/research/entrymodelling/details.html
An important tool for interpretation of all forms of meteor observation are numerical entry models. The detailed physics of what happens during hypervelocity impact of a meteoroid with the atmosphere is a major topic of study with implications in many fields, such as aeronomy, astrobiology and impact cratering. It is also an exceedingly complex topic involving hypersonic airflow, plasma physics, fragmentation dynamics, chemistry, non-equilibrium thermodynamics, radiative processes and materials science.
