我怎样才能模仿格里菲斯的电动力学教科书？

Question

这是一本非常漂亮的教科书，我非常喜欢。我认为它的字体很棒——我知道是 Times New Roman。但不知何故，我甚至无法接近它。主要障碍之一是以某种方式使字体变粗。无论如何，这是一个示例页面。如果有人能将其翻译成 TeX，我会很佩服。

PS 主要问题是想办法让 Times New Roman 字体稍微粗一点。这是我的尝试 - 有没有什么办法让它看起来不那么俗气？：

Answer 1

和\usepackage{newtxtext,newtxmath}

和\usepackage{tgtermes}\usepackage[lite]{mtpro2}

和\usepackage{stix}

和\usepackage{mathptmx}

来源

\documentclass{article}
\usepackage{amsmath}
%%% Uncomment one at a time
\usepackage{newtxtext,newtxmath}
%\usepackage{tgtermes}\usepackage[lite]{mtpro2}
%\usepackage{stix}
%\usepackage{mathptmx}

\newcommand{\vect}[1]{\mathbf{#1}}


\begin{document}
\renewcommand\thesection{9.\arabic{section}}
\setcounter{section}{1}
\renewcommand\theequation{9.\arabic{equation}}
\setcounter{equation}{39}

\section{Electromagnetic Waves in Vacuum}

\subsection{The Wave Equation for $\vect{E}$ and $\vect{B}$}

In regions of space where there is no charge or current,
Maxwell's equations read
\begin{equation}
\left.
\begin{alignedat}{4}
&\text{(i)}\quad & \nabla\cdot\vect{E}&=0,\qquad
&&\text{(ii)}\quad & \nabla\times\vect{E}&=-\frac{\partial\vect{B}}{\partial t},
\quad\\
&\text{(iii)}\quad & \nabla\cdot\vect{B}&=0,\qquad
&&\text{(iv)}\quad & \nabla\times\vect{B}&=\mu_0\epsilon_0\frac{\partial\vect{E}}{\partial t}.
\quad
\end{alignedat}
\right\rbrace
\end{equation}
They constitute a set of coupled, first-order, partial differential equations
for $\vect{E}$ and $\vect{B}$. They can be \emph{de}coupled by applying the
curl to (iii)~and~(iv):
\begin{align*}
\nabla\times(\nabla\times\vect{E}) &=
  \nabla(\nabla\cdot\vect{E})-\nabla^2\cdot\vect{E}=
  \nabla\times\left(-\frac{\partial\vect{B}}{\partial t}\right)
\\[1ex]
&=
-\frac{\partial}{\partial t}(\nabla\times\vect{B})=
-\mu_0\epsilon_0\frac{\partial^2\vect{E}}{\partial t^2},
\\[2ex]
\nabla\times(\nabla\times\vect{B}) &=
  \nabla(\nabla\cdot\vect{B})-\nabla^2\cdot\vect{B}=
  \nabla\times\left(\mu_0\epsilon_0\frac{\partial\vect{E}}{\partial t}\right)
\\[1ex]
&=
\mu_0\epsilon_0\frac{\partial}{\partial t}(\nabla\times\vect{E})=
-\mu_0\epsilon_0\frac{\partial^2\vect{B}}{\partial t^2}.
\end{align*}
\end{document}