🕷️ Crawler Inspector

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Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 132 (from laksa093)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa132.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://demos.smu.ca/demos/thermo/90-brownian-motion\')), getAhrefsUnparsedNoserviceFromURL(\'https://demos.smu.ca/demos/thermo/90-brownian-motion\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/demos.smu.ca\/demos\/thermo\/90-brownian-motion","crawl_time":1774144637,"first_indexed_time":1515572662,"http_code":200,"src_unparsed":"ca,smu!demos,\/demos\/thermo\/90-brownian-motion s443","src_root_hash":"488666475048905532","history_drop_reason":null,"meta_title":"Brownian Motion Demonstration","meta_descriptions":["An extensive collection of physics demonstrations and videos for use in the classroom and at home!"],"attrs_boilerpipe_text":"Brownian motion is shown using the Molecular Motion Demonstrator, a plastic chip, and small metal beads.\nWATCH THE VIDEO\nTeachable Topics:\nBrownian Motion\nMolecular Motion\nConservation of Momentum\nTheory:\nBrownian motion describes the atomic motion that occurs from the random path molecules make when being bombarded by collisions with their fellow (usually smaller) molecules. The random nature of the collisions makes the path of the molecule impossible to predict.\nThe temperature of the gas directly affects Brownian motion due to the increase in the number and energy in the collisions.  \nApparatus:\nMolecular Motion Demonstrator\nRed Disc\nBall Bearings\nProcedure:\nPlace the MMD onto a level surface\nPlace the large red disc in the centre of the platform.\nAdd several smaller metal ball bearings\nTurn on the MMD and watch the magic happen!","attrs_markdown":"[![Saint Mary\\&\\#039;s Physics Demos](https:\/\/demos.smu.ca\/images\/banners\/demo4p0-Banner.png)](https:\/\/demos.smu.ca\/)\n\nA Collection of New and Classic Physics Demonstrations! Brought to you by Saint Mary's University\n\n### Main Menu\n- [Home](https:\/\/demos.smu.ca\/)\n- [Demos](https:\/\/demos.smu.ca\/demos)\n  - [\\*\\*NEWEST\\*\\*](https:\/\/demos.smu.ca\/demos\/newest)\n  - [Electricity & Magnetism](https:\/\/demos.smu.ca\/demos\/e-n-m)\n  - [Mechanics](https:\/\/demos.smu.ca\/demos\/mechanics)\n  - [Thermodynamics](https:\/\/demos.smu.ca\/demos\/thermo)\n  - [Waves](https:\/\/demos.smu.ca\/demos\/waves)\n  - [Optics](https:\/\/demos.smu.ca\/demos\/optics)\n  - [Astronomy](https:\/\/demos.smu.ca\/demos\/astronomy)\n  - [Modern Physics](https:\/\/demos.smu.ca\/demos\/modern)\n  - [Fluid Mechanics](https:\/\/demos.smu.ca\/demos\/fluid-mechanics)\n- [How-Tos](https:\/\/demos.smu.ca\/how-tos)\n- [Nova Scotia Teachers](https:\/\/demos.smu.ca\/nova-scotia-classroom)\n- [Contact Us](https:\/\/demos.smu.ca\/contact-us)\n\n# Brownian Motion Demonstration\n### Brownian motion is shown using the Molecular Motion Demonstrator, a plastic chip, and small metal beads.\n***\n**WATCH THE VIDEO**\n***\n**Teachable Topics:**\n\n- Brownian Motion\n- Molecular Motion\n- Conservation of Momentum\n***\n**Theory:**\n\nBrownian motion describes the atomic motion that occurs from the random path molecules make when being bombarded by collisions with their fellow (usually smaller) molecules. The random nature of the collisions makes the path of the molecule impossible to predict.\n\nThe temperature of the gas directly affects Brownian motion due to the increase in the number and energy in the collisions.\n***\n**Apparatus:**\n\n- Molecular Motion Demonstrator\n- Red Disc\n- Ball Bearings\n***\n**Procedure:**\n\n1. Place the MMD onto a level surface\n2. Place the large red disc in the centre of the platform.\n3. Add several smaller metal ball bearings\n4. Turn on the MMD and watch the magic happen\\!\n\n[Previous article: How Does Boyle's Law Work? Prev](https:\/\/demos.smu.ca\/demos\/thermo\/91-boyle-s-law)   [Next article: Blowing Up a Balloon with Liquid Nitrogen Next](https:\/\/demos.smu.ca\/demos\/thermo\/80-gas-expansion-in-balloon)\n\n### Random Demo\n- [The Difference Between Transverse & Longitudinal Waves](https:\/\/demos.smu.ca\/demos\/waves\/110-transverse-longitudinal-waves)\n\n### Latest Articles\n- [How To Find Exoplanets (in the classroom)](https:\/\/demos.smu.ca\/demos\/astronomy\/217-how-to-find-exoplanets-in-the-classroom)\n- [Sunscreen and UV Protection](https:\/\/demos.smu.ca\/demos\/e-n-m\/215-sunscreenuv)\n- [Why do Radiometers Spin?](https:\/\/demos.smu.ca\/demos\/thermo\/84-radiometer)\n- [How Much Does a Floating Mass Weigh?](https:\/\/demos.smu.ca\/demos\/fluid-mechanics\/213-floating-mass)\n- [Static Discharge Along a Graphite Path](https:\/\/demos.smu.ca\/demos\/e-n-m\/212-vdg-graphite)\n- [How Does a Rattleback Work?](https:\/\/demos.smu.ca\/demos\/mechanics\/211-rattleback)\n- [Sunscreen & UV Radiation](https:\/\/demos.smu.ca\/demos\/e-n-m\/210-sunscreen)\n\n[![](https:\/\/demos.smu.ca\/images\/stories\/Physics-Science_Building.jpg)](https:\/\/www.smu.ca\/faculty-of-science\/index.html)\n\n#### **Study Science @ SMU\\!**\n\n[![](https:\/\/demos.smu.ca\/images\/EM_logo5.jpg)](https:\/\/demos.smu.ca\/?view=article&id=205 \"Earth's Mixtape\")\n\nA podcast that reviews the\n\nVoyager Golden Record\\!\n\n[![](https:\/\/demos.smu.ca\/images\/Listen_on_Apple_Podcasts.jpg)](https:\/\/itunes.apple.com\/ca\/podcast\/id1270875316)\n### Search 'Em Up\\!","attrs_readable_markdown":"### Brownian motion is shown using the Molecular Motion Demonstrator, a plastic chip, and small metal beads.\n***\n**WATCH THE VIDEO**\n***\n**Teachable Topics:**\n\n- Brownian Motion\n- Molecular Motion\n- Conservation of Momentum\n***\n**Theory:**\n\nBrownian motion describes the atomic motion that occurs from the random path molecules make when being bombarded by collisions with their fellow (usually smaller) molecules. The random nature of the collisions makes the path of the molecule impossible to predict.\n\nThe temperature of the gas directly affects Brownian motion due to the increase in the number and energy in the collisions.\n***\n**Apparatus:**\n\n- Molecular Motion Demonstrator\n- Red Disc\n- Ball Bearings\n***\n**Procedure:**\n\n1. Place the MMD onto a level surface\n2. Place the large red disc in the centre of the platform.\n3. Add several smaller metal ball bearings\n4. Turn on the MMD and watch the magic happen\\!","meta_canonical":null}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📄

INDEXABLE

✅

CRAWLED

17 days ago

🤖

ROBOTS ALLOWED

Page Info Filters

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	0.6 months ago
History drop	PASS	`isNull(history_drop_reason)`	No drop reason
Spam/ban	PASS	`fh_dont_index != 1 AND ml_spam_score = 0`	ml_spam_score=0
Canonical	PASS	`meta_canonical IS NULL OR = '' OR = src_unparsed`	Not set

Page Details

Property	Value
URL	https://demos.smu.ca/demos/thermo/90-brownian-motion
Last Crawled	2026-03-22 01:57:17 (17 days ago)
First Indexed	2018-01-10 08:24:22 (8 years ago)
HTTP Status Code	200
Meta Title	Brownian Motion Demonstration
Meta Description	An extensive collection of physics demonstrations and videos for use in the classroom and at home!
Meta Canonical	null
Boilerpipe Text	Brownian motion is shown using the Molecular Motion Demonstrator, a plastic chip, and small metal beads. WATCH THE VIDEO Teachable Topics: Brownian Motion Molecular Motion Conservation of Momentum Theory: Brownian motion describes the atomic motion that occurs from the random path molecules make when being bombarded by collisions with their fellow (usually smaller) molecules. The random nature of the collisions makes the path of the molecule impossible to predict. The temperature of the gas directly affects Brownian motion due to the increase in the number and energy in the collisions. Apparatus: Molecular Motion Demonstrator Red Disc Ball Bearings Procedure: Place the MMD onto a level surface Place the large red disc in the centre of the platform. Add several smaller metal ball bearings Turn on the MMD and watch the magic happen!
Markdown	[![Saint Mary\&\#039;s Physics Demos](https://demos.smu.ca/images/banners/demo4p0-Banner.png)](https://demos.smu.ca/) A Collection of New and Classic Physics Demonstrations! Brought to you by Saint Mary's University ### Main Menu - [Home](https://demos.smu.ca/) - [Demos](https://demos.smu.ca/demos) - [\\NEWEST\\](https://demos.smu.ca/demos/newest) - [Electricity & Magnetism](https://demos.smu.ca/demos/e-n-m) - [Mechanics](https://demos.smu.ca/demos/mechanics) - [Thermodynamics](https://demos.smu.ca/demos/thermo) - [Waves](https://demos.smu.ca/demos/waves) - [Optics](https://demos.smu.ca/demos/optics) - [Astronomy](https://demos.smu.ca/demos/astronomy) - [Modern Physics](https://demos.smu.ca/demos/modern) - [Fluid Mechanics](https://demos.smu.ca/demos/fluid-mechanics) - [How-Tos](https://demos.smu.ca/how-tos) - [Nova Scotia Teachers](https://demos.smu.ca/nova-scotia-classroom) - [Contact Us](https://demos.smu.ca/contact-us) # Brownian Motion Demonstration ### Brownian motion is shown using the Molecular Motion Demonstrator, a plastic chip, and small metal beads. * WATCH THE VIDEO * Teachable Topics: - Brownian Motion - Molecular Motion - Conservation of Momentum * Theory: Brownian motion describes the atomic motion that occurs from the random path molecules make when being bombarded by collisions with their fellow (usually smaller) molecules. The random nature of the collisions makes the path of the molecule impossible to predict. The temperature of the gas directly affects Brownian motion due to the increase in the number and energy in the collisions. * Apparatus: - Molecular Motion Demonstrator - Red Disc - Ball Bearings * Procedure: 1. Place the MMD onto a level surface 2. Place the large red disc in the centre of the platform. 3. Add several smaller metal ball bearings 4. Turn on the MMD and watch the magic happen\! [Previous article: How Does Boyle's Law Work? Prev](https://demos.smu.ca/demos/thermo/91-boyle-s-law) [Next article: Blowing Up a Balloon with Liquid Nitrogen Next](https://demos.smu.ca/demos/thermo/80-gas-expansion-in-balloon) ### Random Demo - [The Difference Between Transverse & Longitudinal Waves](https://demos.smu.ca/demos/waves/110-transverse-longitudinal-waves) ### Latest Articles - [How To Find Exoplanets (in the classroom)](https://demos.smu.ca/demos/astronomy/217-how-to-find-exoplanets-in-the-classroom) - [Sunscreen and UV Protection](https://demos.smu.ca/demos/e-n-m/215-sunscreenuv) - [Why do Radiometers Spin?](https://demos.smu.ca/demos/thermo/84-radiometer) - [How Much Does a Floating Mass Weigh?](https://demos.smu.ca/demos/fluid-mechanics/213-floating-mass) - [Static Discharge Along a Graphite Path](https://demos.smu.ca/demos/e-n-m/212-vdg-graphite) - [How Does a Rattleback Work?](https://demos.smu.ca/demos/mechanics/211-rattleback) - [Sunscreen & UV Radiation](https://demos.smu.ca/demos/e-n-m/210-sunscreen) [![](https://demos.smu.ca/images/stories/Physics-Science_Building.jpg)](https://www.smu.ca/faculty-of-science/index.html) #### Study Science @ SMU\!** [![](https://demos.smu.ca/images/EM_logo5.jpg)](https://demos.smu.ca/?view=article&id=205 "Earth's Mixtape") A podcast that reviews the Voyager Golden Record\! [![](https://demos.smu.ca/images/Listen_on_Apple_Podcasts.jpg)](https://itunes.apple.com/ca/podcast/id1270875316) ### Search 'Em Up\!
Readable Markdown	### Brownian motion is shown using the Molecular Motion Demonstrator, a plastic chip, and small metal beads. * WATCH THE VIDEO * Teachable Topics: - Brownian Motion - Molecular Motion - Conservation of Momentum * Theory: Brownian motion describes the atomic motion that occurs from the random path molecules make when being bombarded by collisions with their fellow (usually smaller) molecules. The random nature of the collisions makes the path of the molecule impossible to predict. The temperature of the gas directly affects Brownian motion due to the increase in the number and energy in the collisions. * Apparatus: - Molecular Motion Demonstrator - Red Disc - Ball Bearings * Procedure:** 1. Place the MMD onto a level surface 2. Place the large red disc in the centre of the platform. 3. Add several smaller metal ball bearings 4. Turn on the MMD and watch the magic happen\!
Shard	132 (laksa)
Root Hash	488666475048905532
Unparsed URL	ca,smu!demos,/demos/thermo/90-brownian-motion s443