journal and update

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diff --git a/journal/20250703.org b/journal/20250703.org
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+#+TITLE: Daily Journal
+#+STARTUP: showeverything
+#+DESCRIPTION: My daily journal entry
+#+AUTHOR: Preston Pan
+#+HTML_HEAD: <link rel="stylesheet" type="text/css" href="../style.css" />
+#+html_head: <script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+#+html_head: <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
+#+options: broken-links:t
+* Thursday, 03 July 2025
+** 20:05 
+I am currently studying more radio mathematics in order to fully understand
+how certain radio modes work, and secondly how antennas work on a deeper level.
+I've gained some insight into antennas already by analyzing the radiation patterns
+of dipole antennas and loop antennas, particularly with the use of retarded potentials
+and certain simplifying assumptions regarding the strength of far-field radiation and the
+size of the dipole as well as the transmitting frequency.
+
+Additionally, I am studying many filter circuits that are used in superheterodyne circuits,
+and I am studying the structure of different transmitters such as AM, QAM, SSB, and FM
+transmitters. I hope to gain a fully functional understanding of these transmitters as well
+as an understanding of the different propagation methods (skywave, ground wave, moon bounce, scattering, etc...).
+Of course I already have an operational understanding of propagation, but I would like to understand
+these all from a mathematical perspective, and understand polarization with regards to scattering.
diff --git a/journal/20250720.org b/journal/20250720.org
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+#+TITLE: Daily Journal
+#+STARTUP: showeverything
+#+DESCRIPTION: My daily journal entry
+#+AUTHOR: Preston Pan
+#+HTML_HEAD: <link rel="stylesheet" type="text/css" href="../style.css" />
+#+html_head: <script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+#+html_head: <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
+#+options: broken-links:t
+* Sunday, 20 July 2025
+** 21:21 
+I'm almost done real analysis. I'm just reviewing and I'm probably going to take a look
+at the chapter on the Riemann-Stieltjes integral. Then I'm going to switch over to complex analysis.
+I also skipped a couple of subchapters that I have to go back to now, but that's no big deal, and I'm
+going back to them now.
diff --git a/journal/20250723.org b/journal/20250723.org
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+#+TITLE: Daily Journal
+#+STARTUP: showeverything
+#+DESCRIPTION: My daily journal entry
+#+AUTHOR: Preston Pan
+#+HTML_HEAD: <link rel="stylesheet" type="text/css" href="../style.css" />
+#+html_head: <script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
+#+html_head: <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
+#+options: broken-links:t
+* Wednesday, 23 July 2025
+** 23:15 
+I'm journaling again to say that I'm basically done real analysis now, and I'm onto
+one of complex analysis, or programming. I should really do some more physical projects as well.
+Hopefully I can learn some differential geometry next, as it is required in order to continue exploring
+physics.