🔍 Tìm kiếm từ vựng
nebular hypothesis
Noun
giả thuyết tinh vân, lý thuyết tinh vân
(cosmology) a theory proposing that the solar system formed from a rotating nebula of gas and dust about 4.6 billion years ago
"The nebular hypothesis is one of the leading theories of solar system formation ."
interstellar medium
Noun
môi trường liên sao, vật chất liên sao
the matter and radiation that exists in the space between stars within a galaxy
"Astronomers study the interstellar medium to understand cosmic evolution ."
heliosphere
Noun
nhật quyển, vùng không gian chịu ảnh hưởng của gió mặt trời
the space surrounding the Sun dominated by solar wind
"The shape of the heliosphere resembles a teardrop."
meteoroid
Noun
thiên thạch nhỏ, vật thể nhỏ trên trời
a small celestial body that becomes visible as a meteor upon entrance into the atmosphere of the earth
"The study of meteoroids provides valuable insights into the composition and dynamics of our solar system , as well as the potential hazards they pose to spacecraft and Earth ."
inflation
Noun
lạm phát, mở rộng nhanh chóng
(cosmology) the rapid expansion of the universe following the Big Bang
"Understanding inflation is crucial for comprehending the universe 's evolution ."
magnetic storm
Noun
bão từ, cơn bão từ tính
a disruption in earth's magnetic field caused by solar activity, resulting in variations that can impact electronic systems and communications on earth
"Scientists monitor magnetic storms closely to better understand their effects on Earth 's technology and to develop strategies for mitigating potential disruptions ."
aurora australis
Noun
cực quang phương nam, ánh sáng phương nam
the colored lights, mainly green and red, in the sky seen primarily near the southern magnetic pole
"The aurora australis is a stunning phenomenon that has inspired artists , scientists , and adventurers throughout history , offering a glimpse of the Earth 's connection to the wider cosmos ."
aurora borealis
Noun
cực quang, ánh sáng phương bắc
the colored lights, mainly green and red, in the sky seen primarily near the northern magnetic pole
"The aurora borealis has captivated people for centuries and continues to be a source of wonder and inspiration for astronomers , photographers , and travelers alike ."
cosmogonic
Adjective
thuộc vũ trụ học, liên quan đến nguồn gốc và sự hình thành của vũ trụ hoặc thiên thể
associated with the phenomena, processes, or theories related to the origin and formation of the universe or celestial bodies
"The Big Bang theory is a prominent cosmogonic model for the universe 's creation ."
extragalactic astronomy
Noun
thiên văn học ngoài thiên hà, nghiên cứu các thiên thể bên ngoài Dải Ngân Hà
study of celestial objects outside the Milky Way galaxy
"Extragalactic astronomy sheds light on cosmic evolution ."
sidereal
Adjective
thuộc sao, liên quan đến các vì sao
relating to the stars or constellations, especially in terms of their positions relative to Earth
"Sidereal charts plot the positions of celestial objects against the background of distant stars ."
algorithm
Noun
thuật toán
a finite sequence of well-defined, mathematical instructions for completing a specific task or solving a problem
"The Fast Fourier Transform ( FFT ) algorithm efficiently computes the discrete Fourier transform of a sequence or its inverse ."
variance
Noun
phương sai
a measure of the dispersion or spread of a set of data points in statistics, representing the average squared deviation from the mean
"Variance is an important concept in probability theory and is used in various statistical analyses, such as hypothesis testing and regression analysis."
derivative
Noun
đạo hàm, sự dẫn xuất
the rate at which a function changes with respect to its independent variable
"The chain rule allows finding the derivative of composite functions, crucial for analyzing complex mathematical expressions."
integral
Noun
tích phân, tích phân xác định
a mathematical concept representing the total accumulation of a quantity, often represented by the area under a curve on a graph
"The definite integral of a probability density function gives the probability of an event occurring within a specified range."
limit
Noun
giới hạn
the value that a function or sequence approaches as its input or index gets close to a particular value
"Evaluating the limit of a difference quotient leads to the definition of a derivative in calculus ."
differential
Noun
vi phân, sự thay đổi vô cùng nhỏ
(mathematics) a really small change in a function or variable
"Differential equations describe relationships involving derivatives."
logarithm
Noun
lôgarit
a mathematical function that represents the exponent to which a fixed number, called the base, must be raised to produce a given number
"Astronomers apply logarithms to express stellar magnitudes and measure the brightness of celestial objects ."
prime
Noun
số nguyên tố, nguyên tố
a natural number greater than 1 that has no positive divisors other than 1 and itself
"The number 7 is a prime, as it can only be divided by 1 and 7 ."
permutation
Noun
hoán vị, sắp xếp
(mathematics) a rearrangement of a set of elements in a specific order or sequence
"Permutations are used to count different ways to arrange objects ."
eigenvalue
Noun
giá trị riêng, giá trị đặc trưng
a special number used in linear algebra to describe how vectors change during transformations
"The eigenvalues of a symmetric matrix are always real numbers ."
polynomial
Noun
đa thức, biểu thức đa thức
a mathematical expression with variables raised to powers and combined using arithmetic operations
"Simple expressions like 5x are considered polynomials."
integration
Noun
tích phân
a mathematical operation that calculates the accumulation of quantities, represented as the area under a curve on a graph
"Physicists use integration to solve problems in mechanics ."
matrix multiplication
Noun
phép nhân ma trận
a mathematical operation that combines two matrices to produce a new matrix, calculated by multiplying rows and columns
"In finance , matrix multiplication is used for portfolio optimization and risk analysis ."
quadratic equation
Noun
phương trình bậc hai, phương trình toàn phương
an equation involving the square of a variable
"Factoring is a common method to solve quadratic equations when possible ."
tectonics
Noun
kiến tạo, nghiên cứu về các mảng kiến tạo
the scientific study of the Earth's lithosphere and the processes that shape its structure, including the movement of tectonic plates, earthquakes, and volcanic activity
"Tectonics is a multidisciplinary science that integrates geophysics , geology , and geochemistry to unravel the complexities of Earth 's lithospheric processes ."
fissure
Noun
khe nứt, vết nứt
(in geology) a narrow break or crack that partially divides a rock or surface without completely separating it
"The tectonic plates pulled apart , causing a new fissure to emerge in the earth 's surface ."
subduction
Noun
sự hút chìm, sự chìm xuống
a geological process where one tectonic plate moves under another and sinks into the Earth's mantle
"The Ring of Fire is a prominent zone of subduction-related volcanic and seismic activity encircling the Pacific Ocean basin."
isostasy
Noun
sự cân bằng đẳng tĩnh, trạng thái cân bằng đẳng tĩnh
the gravitational balance between Earth's rigid lithosphere and the underlying, semi-fluid asthenosphere, influencing variations in surface elevation
"Isostasy is a fundamental principle in geophysics, guiding our understanding of the dynamic balance between Earth's rigid and fluid layers."
lithosphere
Noun
thạch quyển, lớp vỏ cứng ngoài của Trái Đất
the Earth's rigid outer layer, made up of the crust and upper mantle, and divided into tectonic plates
"The lithosphere is in constant motion , with plates drifting and interacting over geological time scales ."