Science General Knowledge Part 2

1. Physics Highlights

Quantum Entanglement Entangled particles share a state such that the measurement of one instantly determines the state of the other, regardless of distance. Recent experiments have closed the locality loophole, confirming nonlocality at a distance of over 1,200km.

Gravitational Waves The LIGOVirgo collaboration has detected over 90 binary blackhole mergers and several neutronstar collisions. These observations provide direct evidence for General Relativity in the strongfield regime and enable multimessenger astronomy.

Fusion Research The ITER project in France aims to produce 500MW of fusion power from 50MW of input. Meanwhile, private enterprises like Commonwealth Fusion Systems are pursuing compact highfield tokamaks that could reach netgain within the decade.

Key Equations to Remember

• Einsteins massenergy equivalence: \(E = mc^2\)
• Schrdinger equation (timedependent): \(i\hbar\frac{\partial\psi}{\partial t}= \hat{H}\psi\)
• Plancks law for blackbody radiation: \(B(\nu,T)=\frac{2h\nu^3}{c^2}\frac{1}{e^{h\nu/kT}-1}\)

2. Chemistry Highlights

CRISPRCas Systems Though often discussed in biology, the chemistry of the Cas9 protein and guide RNA is central to its function. Understanding the hydrogenbonding network and metalion cofactors enables precision gene editing.

Perovskite Solar Cells Leadhalide perovskites now reach power conversion efficiencies above 26%. Their facile solution processing and tunable bandgap make them a hot research area.

Green Chemistry The 12 Principles of Green Chemistry guide the design of safer solvents, catalytic processes, and wasteminimizing pathways. Atomeconomy reactions such as crosscoupling (e.g., SuzukiMiyaura) showcase these ideas.

Important Concepts

• Hybridization: sp, sp, sp and their geometry.
• AcidBase Theory: BrnstedLowry, Lewis, and the concept of pKa.
• Thermodynamics: Gibbs free energy \(\Delta G = \Delta H - T\Delta S\).

3. Biology Highlights

Microbiome Human bodies host ~10trillion microbial cells. Their collective genome (the microbiome) influences immunity, metabolism, and even behavior.

Vaccines and mRNA Technology The success of PfizerBioNTech and Moderna COVID19 vaccines demonstrated that lipidnanoparticle delivery of mRNA can elicit robust immunity with rapid development cycles.

CRISPR Gene Drives By biasing inheritance, gene drives can spread a desired trait (e.g., malariaresistant genes) through wild populations. Ethical and ecological considerations remain a priority.

Memorization Aids

• Taxonomic hierarchy: Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.
• Human body fluids: Cerebrospinal fluid (CSF), synovial fluid, peritoneal fluid, pleural fluid.
• Key vitamins: A, Bcomplex (B1, B2, B3, B6, B12), C, D, E, K.

4. Earth & Space Science

Plate Tectonics The seven major plates (Pacific, North American, Eurasian, African, South American, IndoAustralian, Antarctic) move at rates of 110cmyr, driving earthquakes, volcanoes, and mountain building.

Climate Change Indicators Global mean surface temperature has risen ~1.1C since preindustrial times. Sealevel rise averages 3.3mm per year, with accelerated icesheet loss in Greenland and Antarctica.

Exoplanet Discoveries NASAs TESS and the upcoming JWST have confirmed over 5,000 exoplanets. The habitable zone concept is refined by considering stellar flux, atmospheric composition, and planetary mass.

Important Numbers

• Earths radius: ~6,371km
• Average atmospheric pressure at sea level: 101.3kPa
• Suns luminosity: 3.82810W

5. Recent Technological Advances

Artificial Intelligence in Science Machinelearning models such as AlphaFold have predicted protein structures with atomic accuracy, accelerating drug discovery and synthetic biology.

Quantum Computing Companies like IBM, Google, and Rigetti have built superconducting qubit processors exceeding 100 qubits. Errorcorrection protocols and quantumsupremacy demonstrations are moving toward practical applications.

3D Bioprinting Layerbylayer deposition of bioinks containing living cells enables the fabrication of tissues such as cartilage, skin, and vascular structures for research and therapeutic use.

6. Quick Facts & Trivia

• The fastest particle accelerator, the Large Hadron Collider, is 27km in circumference.
• Water expands by about 9% when it freezes, a unique property that protects aquatic life in winter.
• The human genome contains roughly 3billion base pairs; the entire sequence can be stored on a 2GB USB drive.
• The deepest known ocean trench, the Mariana Trench, reaches 11,034m below sea level.
• Graphene is a single layer of carbon atoms arranged in a hexagonal lattice and is 200 times stronger than steel by weight.

For further reading, visit reputable sources such as Nature, Science Magazine, and the official pages of NASA and CERN.