🔍 Tìm kiếm từ vựng
isotope
Noun
đồng vị, dạng đồng vị
each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, leading to variation in atomic mass
"Isotopes play a crucial role in understanding nuclear reactions , radiometric dating , and various applications in science and technology ."
emulsion
Noun
nhũ tương, hỗn hợp hai chất lỏng
a mixture of two liquids where tiny droplets of one are evenly dispersed in the other, like oil in water
"Butter is an emulsion of water in fat , formed through the churning of cream , breaking down fat globules and dispersing them in the water phase ."
half-life
Noun
chu kỳ bán rã, thời gian bán hủy
the time required for half of a quantity of a substance to undergo a change or decay, typically in the context of radioactive decay or chemical reactions
"The concept of half-life is applicable in fields such as pharmacology , geology , physics , and environmental science ."
depleted uranium
Noun
uranium cạn kiệt, uranium nghèo
a type of uranium that has most of its more radioactive isotopes removed, primarily used for armor-piercing ammunition and shielding
"Depleted uranium can pose hazards if it enters the environment , such as through the release of dust or the contamination of soil and water ."
combustion
Noun
sự cháy, quá trình đốt cháy
a chemical reaction between a fuel and an oxidizing agent, typically producing heat and light
"Controlled combustion of waste materials in incinerators helps manage and reduce solid waste ."
string theory
Noun
lý thuyết dây, lý thuyết siêu dây
a scientific idea that all particles are tiny vibrating strings, not point-like dots, and these vibrations create different particles and forces
"Despite its theoretical appeal , string theory remains a topic of active research and debate within the physics community ."
diffraction
Noun
nhiễu xạ, nhiễu xạ sóng
the bending, spreading, and interference of waves as they encounter obstacles or pass through narrow openings, often observed in the behavior of light, sound, or other waves
"Diffraction effects are commonly observed in photography , influencing the sharpness of images captured through lenses ."
velocity
Noun
tốc độ, vận tốc
the speed at which something moves in a specific direction
"High-velocity winds caused damage to buildings and trees during the storm."
amplitude
Noun
biên độ, độ lớn
(physics) the maximum distance a vibrating material, sound wave, etc. such as a pendulum travels from its first position
"In quantum mechanics , the amplitude of a wave function describes the probability of finding a particle in a certain position or state ."
fermion
Noun
fermion, hạt Fermi
tiny particles that make up matter and have a property called spin, like the building blocks of atoms
"The Standard Model of particle physics classifies elementary particles into fermions and bosons , with fermions being the basic building blocks of matter ."
centripetal force
Noun
lực hướng tâm, lực kéo về trung tâm
the force that acts on an object moving in a circular path, directed toward the center of the circle or the axis of rotation, preventing the object from moving in a straight line
"The Earth 's gravitational pull on the Moon provides the centripetal force necessary for the Moon 's orbital motion ."
kinetic energy
Noun
động năng, năng lượng chuyển động
the energy possessed by an object due to its motion, defined as one-half the mass of the object multiplied by the square of its velocity, expressed by the equation KE = 0.5 * m * v^2
"Heat , which is a form of energy , is related to the kinetic energy of particles in motion ."
antimatter
Noun
phản vật chất, vật chất phản
(physics) matter consisting of elementary particles that are the antiparticles of those of regular matter
"Antimatter propulsion is a theoretical concept that could potentially enable spacecraft to travel at near-light speeds in the future."
acceleration
Noun
gia tốc, sự tăng tốc
(physics) the increase in velocity over time
"Faster acceleration means quicker velocity change ."
inertia
Noun
quán tính, xu hướng của một vật thể chống lại sự thay đổi trạng thái chuyển động của nó
the tendency of an object to resist changes in its state of motion, whether at rest or in uniform motion, and to remain in its current state unless acted upon by an external force
"When a bus comes to a sudden stop , passengers may lean forward due to their inertia, continuing their forward motion momentarily ."
oscillation
Noun
dao động
(physics) the back-and-forth motion of an object between two end points
"Gravitationally bound binary star systems undergo regular orbital oscillations as the pair revolve around their mutual center of mass ."
reflection
Noun
sự phản chiếu, sự phản xạ
the action or process where a wave, such as light or sound, bounces back from a surface instead of passing through
"The calm lake 's surface served as a perfect mirror , providing a clear reflection of the surrounding mountains ."
uncertainty principle
Noun
nguyên lý bất định, nguyên lý không chắc chắn
a theory stating that the exact position and momentum of a particle cannot be measured precisely at the same time
"Knowing both properties precisely is impossible according to the uncertainty principle."
neutrino
Noun
neutrino, hạt neutrino
a very small, electrically neutral particle that rarely interacts with matter
"Scientists study neutrinos to learn more about the universe 's fundamental properties ."
space-time
Noun
không-thời gian, liên tục không-thời gian
the theory that adds the notion of time to that of a three-dimensional space
"The study of space-time helps cosmologists understand the large-scale structure and evolution of the universe ."
nuclear fission
Noun
phân hạch hạt nhân, sự phân chia hạt nhân
the process or action of splitting a nucleus into two or more parts resulting in the release of a significant amount of energy
"Nuclear fission is also used in nuclear medicine for diagnostic imaging and cancer treatment through techniques such as radiotherapy ."
electromagnetic
Adjective
điện từ, liên quan đến trường điện từ
referring to the combined interaction of electric and magnetic fields, often associated with waves or radiation
"Electromagnetic induction occurs when a changing magnetic field induces an electric current in a conductor ."
nuclear fusion
Noun
phản ứng tổng hợp hạt nhân
(physics) the reaction in which two nuclei join together and produce energy
"The most promising approach to achieving nuclear fusion on Earth involves heating hydrogen isotopes to extremely high temperatures and confining them in a magnetic field in devices called tokamaks ."
thermic
Adjective
nhiệt, liên quan đến nhiệt
relating to or involving the transformation of heat energy
"The thermic exchange between the ocean and the atmosphere plays a crucial role in climate patterns ."
plasticity
Noun
tính dẻo, khả năng uốn nắn
the capability of being easily changed or molded into many different things
"Researchers investigate the plasticity of biological tissues to develop better models for understanding the biomechanics of the human body ."
kuiper belt
Noun
vành đai Kuiper, đai Kuiper
a region beyond Neptune in the solar system containing icy objects like dwarf planets, asteroids, and comets
"Ongoing research aims to identify and characterize more objects within the Kuiper Belt to enhance our knowledge of the outer solar system."
ecliptic
Noun
hoàng đạo
the apparent path that the Sun traces in the sky over the course of a year, which is also the plane of the Earth's orbit around the Sun
"During a solar eclipse, the Moon crosses the ecliptic plane, aligning with the Sun and Earth."
astronomical unit
Noun
đơn vị thiên văn, AU
a unit of measurement equal to the average distance between the Earth and the Sun, approximately 149.6 million kilometers
"An astronomical unit the average distance from Earth to the Sun ."
cosmic ray
Noun
tia vũ trụ, hạt vũ trụ
a high-energy particle, mainly originating from outside the Solar System, that travels through space at nearly the speed of light
"Astronomers study cosmic rays to understand the processes in distant regions of the universe ."
cosmic microwave background
Noun
bức xạ nền vi ba vũ trụ, bức xạ tàn dư từ Vụ Nổ Lớn
(cosmology) the faint glow of radiation spreading through the universe, believed to be residual radiation from the Big Bang
"Studying fluctuations in CMB reveals insights into cosmic structure formation."