heshen

[Civil Engineering Discoveries @CivilEngDis]

Francis Turbine electric Producing 🚧⚡

[DwanPiece @DwanPiece]

How a Car Starter Circuit Works

[Electrical Knowledge @electric_4u]

Sim structure

[Mathematica @mathemetica]

A collection of essential mathematical symbols equips students and professionals to express ideas with clarity and brevity.

Ceiling brackets ⌈⌉ round up values.
f(x) denotes a function of x and f ∘ g its composition.
Open and closed intervals use (a, b) and [a, b].
Δ marks the discriminant while Σ and Π stand for summation and product.
Infinity is ∞.
Constants include e ≈ 2.718, γ ≈ 0.577, φ ≈ 1.618 and π.
Sets use {}.
Quantifiers ∀ and ∃ mean for all and there exists.
Powers a^b and roots √, ∛, ∜ complete the notations.

[InfoSciHub @InfoSciHub]

Essential elements in chemistry

[Philosophy Of Physics @PhilosophyOfPhy]

Calculus was developed independently by Isaac Newton and Gottfried Wilhelm Leibniz in the seventeenth century.

Newton described changing quantities through his method of fluxions, which is why dots such as ẏ and ÿ are still used for time derivatives.

Leibniz introduced much of the notation now seen in textbooks, including dy/dx and the elongated ∫ symbol, derived from a long s for summa sum. His notation proved especially powerful because it clearly showed which variables were changing and being integrated.

These symbols compress entire mathematical operations into a few marks. Derivatives describe rates of change, integrals accumulate quantities, partial derivatives track change in multivariable systems, and vector and transform notation extends these ideas into mechanics, electromagnetism, quantum theory and signal analysis.

The image therefore contains more than strictly calculus notation, it also includes symbols from complex analysis, vector mathematics, and Fourier and Laplace transforms.

Their importance is practical as well as conceptual. With this symbolic language, physicists can describe motion, fields, waves, heat flow, spacetime and quantum states without rewriting the full reasoning each time.

Calculus symbols are not decorative shorthand; they are the working grammar through which modern mathematical physics expresses change.

[Geosophy @Geosophyy]

TYPES OF LANDFORMS

[Artificial Intelligence @AIGuideHQ]

Factorization formulae || important formulae to remember

Follow for more @AIGuideHQ

[English Grammar @grammarenglis]

Types of doctors

[Code Geek @codek_tv]

TRIGONOMETRY TABLE

[Cosmos Archive @cosmosarcive]

A tensor generalizes vectors and matrices into higher-dimensional mathematical objects that describe relationships between multiple quantities.

A vector is a 1D list, a matrix is a 2D grid, and a 3rd order tensor can be visualized as a 3D cube. The stress tensor σᵢⱼ represents internal forces within a material, while the Riemann curvature tensor

R(u,v)w = ∇ᵤ∇ᵥw − ∇ᵥ∇ᵤw − ∇₍[u,v]₎w

describes the curvature of spacetime in general relativity. Other concepts shown include the product derivative rule, the tensor product A ⊗ B, and the quantum state

(1/√2)(|00⟩ + |11⟩).

Tensors are indispensable in engineering, physics, machine learning, computer vision, and many other fields where multidimensional data and complex interactions must be modeled accurately.

[汐 @xixikawaii]

所以人��的意义是什么

[Sen Ye @SenYe10]

最近有没有发现物价开始上涨了

猪肉开始涨价了

鸡蛋开始涨价了

苹果也开始涨价了

很多东西都悄悄涨价了

这是要通货膨胀了吗？

收入没有涨，钱越来越不值钱，失业人群压力更大了

我还是好好勒紧裤腰带，过苦日子吧

[devalopr @_devalopr]

Starship's 3000 ° C exhaust flame is 300m long and the vibrations are unimaginably violent.

Wonder how they managed to record this without melting the camera?

Here is how 👇

[李老师不是你老师 @whyyoutouzhele]

一场大雨，冲塌了沈阳的“诚信”，露出了里面的“铁皮”
7月15日，有发帖称，沈阳南市场地标性景观“诚信宝鼎”在一场大雨后发生倒塌损毁。 视频中，倒塌后的宝鼎损毁严重，内部结构彻底裸露。
讽刺的是，这座本应代表“诚信”的沉稳建筑，内部竟全是由薄薄的铁皮拼接而成，被网友调侃为“面子工程经不起风雨”。

[Echoes of War @EchoesofWarYT]

July 16, 1945. At 5:29 in the morning, in a stretch of New Mexico desert so brutal the Spanish had named it the Journey of the Dead Man, the United States detonated the first nuclear weapon in history.

They called the test Trinity and they called the bomb itself the Gadget. Nobody was totally sure what would happen. Scientists had a betting pool going on the yield, and a couple of them had quietly worried whether the thing might ignite the atmosphere itself. They went ahead anyway.

The flash lit up the mountains brighter than the sun. People felt it 100 miles away, windows rattled in distant towns, and the heat fused the desert sand into a weird green glass that scientists later named trinitite. The Army put out a cover story that an ammunition dump had exploded.

Robert Oppenheimer later said that watching it, he thought of a line from Hindu scripture. Now I am become Death, the destroyer of worlds. Another physicist there put it more bluntly and said now we are all sons of bitches. Three weeks later Hiroshima was gone. The world changed at dawn in a desert on this day.

[XMath Tricks @XMathTricks]

GRAPHS OF FUNCTIONS