Microwave only found applications into the 1940s and 1950s, much later than radio, because good enough sources were harder to develop.
One notable development was the cavity magnetron in 1940, which was the basis for the original radar systems of World War II.
How Microwaves Work by National MagLab (2017)
Source. A bit meh. Does not mention the word cavity magnetron!Tried a quick port to SQLite to get rid of annoying local databases for development, but failed, at c1c2cc4e448b279ff083272df1ac50d20c3304faandthen:fails with:Attempt to hack it:and after that it seems to run.
npm install sqlite3 --save-dev{
"type": "sqlite",
"database": "db.sqlite3",
"entities": ["src/**/**.entity{.ts,.js}"],
"synchronize": true
}npm startDataTypeNotSupportedError: Data type "timestamp" in "ArticleEntity.created" is not supported by "sqlite" database.--- a/src/article/article.entity.ts
+++ b/src/article/article.entity.ts
@@ -20,10 +20,10 @@ export class ArticleEntity {
@Column({default: ''})
body: string;
- @Column({ type: 'timestamp', default: () => "CURRENT_TIMESTAMP"})
+ @Column({ default: () => "CURRENT_TIMESTAMP"})
created: Date;
- @Column({ type: 'timestamp', default: () => "CURRENT_TIMESTAMP"})
+ @Column({ default: () => "CURRENT_TIMESTAMP"})
updated: Date;I can signup and login, terrible error reporting as usual, make sure to use long enough usernames/passwords.
However, article creation fails with:
Unhandled Rejection (TypeError): Cannot read property 'slug' of undefinedFabry Perot Interferometer by JFC UCL (2016)
Source. Description only, reasonable animations. Considers the case of two nearby beam splitters.Fabry-Perot Introduction by Williams College Physics (2020)
Source. Shows a working device. Confocal optical cavity, one of the mirrors scans back and forward moved by a piezoelectric motor, this is called a "scanning Fabry-Perot interferometer".
Does not produce an interference pattern, only an on/off blob, which is then fed into an oscilloscope for analysis. The oscilloscope shows both the mirror displacement (which is given by a voltage) and the light detector output.
The main FeathersJS hello world demo. Notable missing things...
- instant Heroku deployability: FeathersJS Heroku deployment
- no Front-end web framework which sucks, but there are basically official demos that worked e.g. feathers-chat-react
- FeathersJS signup email verification
As of 2021, last commit from 2017.
Running:failed on Ubuntu 20.10 Node.js v14.15.3 with:Likely similar bullshit from: stackoverflow.com/questions/50111688/node-sqlite-node-gyp-build-error-no-member-named-forceset-in-v8object because the Node.js version is too new.
git clone https://github.com/Codaisseur/feathersjs-react-redux-ssr
cd feathersjs-react-redux-ssr
npm install../src/create_string.cpp:17:37: error: no matching function for call to ‘v8::String::Utf8Value::Utf8Value(v8::Local<v8::Value>&)’
17 | v8::String::Utf8Value string(value);
| ^If I try
nvm install v10I Google error messages until reaching:and the next problem is: stackoverflow.com/questions/48513573/gulp-error-gulp-hastask-is-not-a-function
diff --git a/gulpfile.js b/gulpfile.js
index b931e06..24d2cc8 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -14,34 +14,34 @@ gulp.task('css', function() {
.pipe(gulp.dest('./dist'))
})
-gulp.task('css:watch', ['css'], function() {
+gulp.task('css:watch', gulp.series('css', function() {
gulp.watch('app/styles/**/*.sass', ['css'])
-})
+}))
gulp.task('moveAssets', function() {
return gulp.src('./app/assets/**/*')
.pipe(gulp.dest('./dist/assets'))
})
-gulp.task('build:revAssets', ['css', 'moveAssets'], function() {
+gulp.task('build:revAssets', gulp.series('css', 'moveAssets', function() {
var rev = new $.revAll()
return gulp.src('./dist/**/*')
.pipe(rev.revision())
.pipe(gulp.dest('./dist/public'))
.pipe(rev.manifestFile())
.pipe(gulp.dest('./dist'))
-})
+}))
gulp.task('build:cpServer', function() {
return gulp.src('./app/**/*.{js,ejs}')
.pipe(gulp.dest('./dist/server-build'))
})
-gulp.task('build:revServer', ['build:cpServer'], function() {
+gulp.task('build:revServer', gulp.series('build:cpServer', function() {
var manifest = gulp.src('./dist/rev-manifest.json')
return gulp.src('./dist/server-build/{components,containers}/**/*')
.pipe($.revReplace({ manifest: manifest }))
.pipe(gulp.dest('./dist/server-build'))
-})
+}))
gulp.task('build', function() {
runSequence('build:revAssets', 'build:revServer')
diff --git a/package.json b/package.json
index bcb29c3..86bd593 100644
--- a/package.json
+++ b/package.json
@@ -67,7 +67,7 @@
"redux-thunk": "^0.1.0",
"request": "^2.79.0",
"rewire": "^2.3.4",
- "run-sequence": "^1.2.2",
+ "run-sequence": "^2.2.1",
"serve-favicon": "^2.3.2",
"socket.io-client": "^1.7.2",
"superagent": "^1.4.0",
@@ -86,16 +86,16 @@
"concurrently": "^2.0.0",
"cross-env": "^1.0.7",
"enzyme": "^2.3.0",
- "gulp": "^3.9.0",
+ "gulp": "^4.0.2",
"gulp-autoprefixer": "^3.1.0",
"gulp-load-plugins": "^1.2.0",
"gulp-rev": "^6.0.1",
- "gulp-sass": "^2.1.1",
+ "gulp-sass": "4.1.0",
"gulp-sourcemaps": "^1.6.0",
"jsdom": "^7.0.1",
"mocha": "^2.4.5",
"nock": "^2.17.0",
- "node-sass": "^3.4.2",
+ "node-sass": "^5.0.0",
"nodemon": "^1.6.0",
"react-addons-test-utils": "^15.3.2",
"react-transform-catch-errors": "^1.0.0",FeathersJS entry for gothinkster/realworld.
MongoDB-based.
So once you install MongoDB, run with:
MONGODB_FEATHERS_REALWORLD=mongodb://localhost:27017/mydb npm startGot it working on Ubuntu 20.10 with both React and Vue.js front-ends at github.com/randyscotsmithey/feathers-realworld-example-app/commit/8bc3a09242285de624c75bb8345630df499a7d07 as mentioned at github.com/randyscotsmithey/feathers-realworld-example-app/issues/2 except for bad error reporting on UI.
Tests can be run with:but there were 10 failures and 55 passes: github.com/randyscotsmithey/feathers-realworld-example-app/issues/3
MONGODB_FEATHERS_REALWORLD=mongodb://localhost:27017/mydb npm run testhello_world_len points to the special st_shndx == SHN_ABS == 0xF1FF.0xF1FF is chosen so as to not conflict with other sections.st_value == 0xD == 13 which is the value we have stored there on the assembly: the length of the string Hello World!.This is small optimization that our assembler does for us and which has ELF support.
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