Entropy Store - Tutorials
SECTION 1 — Lighting Design Series
The Entropy Store is the official marketplace for the Fighting Entropy ecosystem — offering books, supplemental engineering materials, documentation‑discipline tools, institutional resources, and branded merchandise aligned with engineering clarity, military infrastructure, and federal service.
See below for tutorials complementing the memoir and reflecting the themes of: Engineering Clarity Materials / Institutional Resources /Entropy MerchandiseE624 Tutorial Landing Page
Zonal Cavity Method of Lighting Calculations
By William Maskevich, PE Fighting Entropy Technical Series
🔷 Hero Section — Clear, Structured, Engineering‑Minded
Zonal Cavity Method of Lighting Calculations A physics‑based, documentation‑driven method for determining average illumination in interior spaces.
This tutorial teaches engineers how to calculate illumination using cavity geometry, reflectance, CU tables, and light‑loss factors — the structured foundation of reliable lighting design.
🔷 Why This Tutorial Matters
Lighting design is a system. Systems drift. Entropy accumulates.
E624 teaches the structured method that reduces uncertainty (“entropy”) in lighting calculations by:
using predictable geometry
using manufacturer photometric data
applying cavity ratios
applying reflectance
applying CU tables
applying LLFs
documenting assumptions
producing traceable calculations
This tutorial is the technical backbone of your lighting‑design ecosystem.
🔷 What You Will Learn
By completing this tutorial, you will be able to:
Calculate average illumination using the Zonal Cavity Method
Determine cavity ratios (room, ceiling, floor)
Apply surface reflectance values
Use manufacturer CU tables correctly
Apply LLFs to ensure long‑term illumination reliability
Produce a lighting layout that meets uniformity and spacing criteria
Document calculations using structured worksheets
Integrate illumination selection (E710) and LLFs (E711) into a complete workflow
🔷 How This Tutorial Fits Into the Series
E624 is part of the Fighting Entropy Lighting Series:
E710 — Selecting Level of Illumination
Determines how much light is needed.
E711 — Light Loss Factors
Determines how much light is lost over time.
E624 — Zonal Cavity Method
Determines how to calculate the delivered illumination.
Together, these three tutorials form the Lighting Fundamentals Bundle.
🔷 Access the Tutorial
PDH Online Course Link: E624 — Zonal Cavity Method of Lighting Calculations (Your PDH Online link goes here)
Course Content PDF: Zonal Cavity Method of Lighting Calculations (Your PDH Online PDF link goes here)
Quiz: E624 Quiz (3 PDH) (Your PDH Online quiz link goes here)
🔷 Ecosystem Integration
This tutorial connects directly to your broader ecosystem:
📘 Fighting Entropy — The Memoir
Lighting design is one of the engineering domains where entropy is most visible — drift, degradation, uncertainty, and human‑factors challenges. E624 reinforces the memoir’s themes of:
clarity
documentation discipline
safety culture
engineering integrity
🛒 Entropy Store
Offer bundles such as:
Lighting Fundamentals Bundle (E710 + E711 + E624)
Signed hardcover + tutorial bundle
“I’m Fighting Entropy” mug or tee
🚀 Kickstarter Integration
E624 becomes part of:
Educational tiers
Engineering‑clarity bundles
Masterclass offerings
📝 Engineering Blog
Use E624 to support posts on:
lighting uniformity
glare and human‑factors
documentation discipline
entropy in engineering systems
🔷 Author Section
William Maskevich, PE Licensed Professional Electrical Engineer (CA, IL) NAVFAC Southwest & South Texas — Electrical Engineering Lighting design, electrical distribution, documentation discipline, safety culture Author of the Fighting Entropy memoir and tutorial series
Your engineering identity is:
physics‑based
documentation‑driven
safety‑culture aligned
NAVFAC‑influenced
clarity‑focused
This landing page expresses that identity.
🔷 Call to Action
Start the tutorial. Explore the series. Join the ecosystem. Fight entropy.
⭐ Your E624 Landing Page Is Complete
This page:
is ready for your website
integrates your ecosystem
aligns with your engineering identity
supports your memoir, merch, and Kickstarter
connects E624 to E710 and E711
provides a professional, modern presentation
guides readers → learners → customers → supporters
E710 Tutorial Landing Page
Selecting Level of Illumination (For Use with the Zonal Cavity Method)
By William Maskevich, PE
Fighting Entropy Technical Series
🔷 Hero Section — Clarity, Structure, Engineering Discipline
Selecting Level of Illumination
A structured, physics‑based method for determining how much light is required for interior tasks and activities.
This tutorial teaches engineers how to select illumination levels using the IESNA methodology — the essential first step in any lighting design workflow.
🔷 Why This Tutorial Matters
Lighting design begins with one question:
“How much light do we need?”
E710 answers that question using a disciplined, repeatable method that reduces uncertainty (“entropy”) in lighting design by:
categorizing visual tasks
applying illuminance ranges
applying weighting factors
accounting for human‑factors (age, contrast, speed/accuracy)
documenting assumptions
producing traceable illumination recommendations
This tutorial is the starting point of your lighting‑design ecosystem.
🔷 What You Will Learn
By completing this tutorial, you will be able to:
Identify visual tasks and assign illuminance categories
Apply IESNA illuminance ranges
Use weighting factors to refine illumination recommendations
Account for human‑factors such as age, contrast, and task difficulty
Document illumination decisions using structured worksheets
Produce targeted maintained illumination values for use in E624
Integrate LLFs (E711) to ensure long‑term illumination reliability
🔷 How This Tutorial Fits Into the Series
E710 is part of the Fighting Entropy Lighting Series:
E710 — Selecting Level of Illumination
Determines how much light is needed.
E711 — Light Loss Factors
Determines how much light is lost over time.
E624 — Zonal Cavity Method
Determines how to calculate the delivered illumination.
Together, these three tutorials form the Lighting Fundamentals Bundle.
🔷 Access the Tutorial
PDH Online Course Link:
E710 — Selecting Level of Illumination
(Your PDH Online link goes here)
Course Content PDF:
Selecting Level of Illumination
(Your PDH Online PDF link goes here)
Quiz:
E710 Quiz (1 PDH)
(Your PDH Online quiz link goes here)
🔷 Ecosystem Integration
This tutorial connects directly to your broader ecosystem:
📘 Fighting Entropy — The Memoir
Illumination selection is a perfect example of engineering clarity — the disciplined process of reducing uncertainty before calculations begin.
Author Section
William Maskevich, PE
Licensed Professional Electrical Engineer (CA, IL)
NAVFAC Southwest & South Texas — Electrical Engineering
Lighting design, electrical distribution, documentation discipline, safety culture
Author of the Fighting Entropy memoir and tutorial series
Your engineering identity is:
physics‑based
documentation‑driven
safety‑culture aligned
NAVFAC‑influenced
clarity‑focused
This landing page expresses that identity.
🔷 Call to Action
Start the tutorial.
Explore the series.
Join the ecosystem.
Fight entropy.
E711 Tutorial Landing Page
Light Loss Factors (For Use with Zonal Cavity Lighting Calculations)
By William Maskevich, PE Fighting Entropy Technical Series
🔷 Hero Section — Reliability, Clarity, Long‑Term Performance
Light Loss Factors (LLFs) A structured, physics‑based method for determining how much light is lost over time — and how to design lighting systems that remain reliable throughout their lifetime.
This tutorial teaches engineers how to quantify system degradation using LLD, LDD, and RSDD — the essential reliability factors in lighting design.
🔷 Why This Tutorial Matters
Lighting systems don’t fail all at once. They drift. They degrade. They lose performance gradually.
This drift is entropy — the natural tendency of systems to lose order and reliability over time.
E711 teaches the structured method that reduces uncertainty (“entropy”) in lighting design by:
quantifying lamp lumen depreciation (LLD)
quantifying luminaire dirt depreciation (LDD)
quantifying room surface dirt depreciation (RSDD)
distinguishing recoverable vs non‑recoverable factors
applying maintenance intervals
documenting assumptions
ensuring long‑term illumination reliability
This tutorial is the reliability engineering component of your lighting‑design ecosystem.
🔷 What You Will Learn
By completing this tutorial, you will be able to:
Identify and quantify the three major LLFs (LLD, LDD, RSDD)
Distinguish recoverable vs non‑recoverable LLFs
Use manufacturer data and industry tables to determine LLD
Apply maintenance intervals to determine LDD and RSDD
Calculate the overall LLF for use in Zonal Cavity calculations
Document LLF assumptions using structured worksheets
Ensure lighting systems remain adequate throughout their lifetime
Integrate LLFs with illumination selection (E710) and Zonal Cavity calculations (E624)
🔷 How This Tutorial Fits Into the Series
E711 is part of the Fighting Entropy Lighting Series:
E710 — Selecting Level of Illumination
Determines how much light is needed.
E711 — Light Loss Factors
Determines how much light is lost over time.
E624 — Zonal Cavity Method
Determines how to calculate the delivered illumination.
Together, these three tutorials form the Lighting Fundamentals Bundle.
🔷 Access the Tutorial
PDH Online Course Link: E711 — Light Loss Factors (Your PDH Online link goes here)
Course Content PDF: Light Loss Factors (For Use with Zonal Cavity Lighting Calculations) (Your PDH Online PDF link goes here)
Quiz: E711 Quiz (1 PDH) (Your PDH Online quiz link goes here)
🔷 Ecosystem Integration
This tutorial connects directly to your broader ecosystem:
📘 Fighting Entropy — The Memoir
LLFs are a perfect metaphor for entropy: systems drift, degrade, and lose performance unless engineers apply discipline, maintenance, and documentation.
E711 reinforces the memoir’s themes of:
clarity
documentation discipline
safety culture
engineering integrity
system reliability
🛒 Entropy Store
Offer bundles such as:
Lighting Fundamentals Bundle (E710 + E711 + E624)
Signed hardcover + tutorial bundle
“I’m Fighting Entropy” mug or tee
🚀 Kickstarter Integration
E711 becomes part of:
Educational tiers
Reliability‑engineering bundles
Masterclass offerings
📝 Engineering Blog
Use E711 to support posts on:
lighting system degradation
maintenance intervals
reliability engineering
entropy in engineered systems
documentation discipline
🔷 Author Section
William Maskevich, PE Licensed Professional Electrical Engineer (CA, IL) NAVFAC Southwest & South Texas — Electrical Engineering Lighting design, electrical distribution, documentation discipline, safety culture Author of the Fighting Entropy memoir and tutorial series
Your engineering identity is:
physics‑based
documentation‑driven
safety‑culture aligned
NAVFAC‑influenced
clarity‑focused
This landing page expresses that identity.
🔷 Call to Action
Start the tutorial. Explore the series. Join the ecosystem. Fight entropy.
Light Sources: Characteristics, Selection, and Application
🔷 Hero Section
Light Sources: Characteristics, Selection, and Application A structured exploration of lamp types, photometric behavior, and selection criteria.
🔷 Why This Tutorial Matters
Light sources determine:
color
efficiency
lumen output
degradation
human‑factors
🔷 What You Will Learn
Lamp types
Photometric characteristics
Selection criteria
Application strategies
Integration with E710/E711/E624
🔷 Series Integration
Part of the Lighting Design Series.
🔷 Ecosystem Integration
Memoir: physics‑based reasoning
Entropy Store: Lighting Bundle
Kickstarter: Lighting Masterclass
🔷 Author Section
William Maskevich, PE — lighting design expertise.
🔷 Call to Action
Start learning. Fight entropy.
Lighting Quality: Glare, Uniformity, and Human‑Factors
🔷 Hero Section
Lighting Quality: Glare, Uniformity, and Human‑Factors A human‑factors‑driven tutorial on lighting quality.
🔷 Why This Tutorial Matters
Lighting quality affects:
fatigue
productivity
safety
comfort
visibility
🔷 What You Will Learn
Glare fundamentals
Uniformity principles
Human‑factors
Visual comfort
Integration with E710/E711/E624
🔷 Series Integration
Part of the Lighting Design Series.
🔷 Ecosystem Integration
Memoir: human‑factors
Entropy Store: Lighting Bundle
Kickstarter: Human‑Factors tier
🔷 Author Section
William Maskevich, PE — lighting quality expertise.
🔷 Call to Action
Start learning. Fight entropy.
Light Fixtures: Distribution Patterns, Efficiency, and Selection
🔷 Hero Section
Light Fixtures: Distribution Patterns, Efficiency, and Selection A structured tutorial on fixture types, distribution patterns, and selection.
🔷 Why This Tutorial Matters
Fixtures determine:
distribution
uniformity
glare
efficiency
human‑factors
🔷 What You Will Learn
Fixture types
Distribution patterns
Efficiency
Selection criteria
Integration with E710/E711/E624
🔷 Series Integration
Part of the Lighting Design Series.
🔷 Ecosystem Integration
Memoir: human‑factors
Entropy Store: Lighting Bundle
Kickstarter: Lighting Masterclass
🔷 Author Section
William Maskevich, PE — lighting design expertise.
🔷 Call to Action
Start learning. Fight entropy.
Point‑by‑Point Lighting Calculations
🔷 Hero Section
Point‑by‑Point Lighting Calculations A precision‑driven tutorial for detailed illumination analysis.
🔷 Why This Tutorial Matters
Point‑by‑point calculations:
reveal uniformity
reveal glare
reveal hotspots
reveal deficiencies
complement Zonal Cavity calculations
🔷 What You Will Learn
Calculation grid setup
Luminaire photometric application
Point‑by‑point math
Uniformity analysis
Integration with E710/E711/E624
🔷 Series Integration
Part of the Lighting Design Series.
🔷 Ecosystem Integration
Memoir: engineering clarity
Entropy Store: Lighting Bundle
Kickstarter: Advanced Lighting tier
🔷 Author Section
William Maskevich, PE — lighting calculation expertise.
🔷 Call to Action
Start learning. Fight entropy.