9 different density layers

Mark Rober April 17, 2025
Video Thumbnail
Mark Rober Logo

Mark Rober

View Channel

About

Former NASA engineer. Current CrunchLabs founder and friend of science. Answers to some common questions: 1) I make a monthly toy we build together on a video, that gets delivered to your house that teaches you to think like an engineer. Check it out at- https://crunchlabs.com 2) I studied Mechanical Engineering in School. I did my undergrad at BYU and Masters at USC. 3) I worked for NASA JPL for 9 years, 7 of which were working on the Curiosity Rover (I made a video about it you should def totes watch cause it's probably my favorite of all my videos). Then I made some Halloween costumes. Then I worked for Apple in their Special Projects Group doing Product Design as a Mechanical Engineer for 5 years. Then in 2022 I created CrunchLabs to deliver monthly toys that teach you to think like an engineer.

Video Description

9 different density layers

You May Also Like

Layer Up Your Lab Essentials

AI-recommended products based on this video

Loading...
Whitebite Pro Upgraded Teeth Whitening Kit with Pens for Sensitive Teeth: Teeth Whitening LED Light, Mouth Tray, Carbamide Peroxide Whitening Gel

Whitebite Pro Upgraded Teeth Whitening Kit with Pens for Sensitive Teeth: Teeth Whitening LED Light, Mouth Tray, Carbamide Peroxide Whitening Gel

(131)
$39.99
FREE delivery Sat, Nov 22
Loading...
Whitebite Pro Professional Teeth Whitening Kit for Sensitive Teeth | LED Light Accelerator | 4 Whitening Gels (35% Carbamide Peroxide) & 2 Remineralizing Gels | Professional Dental-Grade | Enamel Safe

Whitebite Pro Professional Teeth Whitening Kit for Sensitive Teeth | LED Light Accelerator | 4 Whitening Gels (35% Carbamide Peroxide) & 2 Remineralizing Gels | Professional Dental-Grade | Enamel Safe

(99)
$33.99
FREE delivery Mon, Nov 17 on your first order
Loading...
Teeth Whitening LED Light Kit - 4+1 Whitening and Desensitization Gel for Sensitive Teeth, Effective Removes Stains from Smoking, Coffee, Wine and Food, Safe Formula for Brighter Smile(20+ Treatments)

Teeth Whitening LED Light Kit - 4+1 Whitening and Desensitization Gel for Sensitive Teeth, Effective Removes Stains from Smoking, Coffee, Wine and Food, Safe Formula for Brighter Smile(20+ Treatments)

(15)
$29.99
FREE delivery Wed, Aug 20 on your first order
Loading...
MAXGROOM Bikini Trimmer Women, 3-in-1 Waterproof Electric Razors Shaver for Pubic Hair, Rechargeable Body Hair Trimmer for Underarm Leg Arm with LED Light and Travel Pouch

MAXGROOM Bikini Trimmer Women, 3-in-1 Waterproof Electric Razors Shaver for Pubic Hair, Rechargeable Body Hair Trimmer for Underarm Leg Arm with LED Light and Travel Pouch

(29)
$49.99
FREE delivery Wed, Aug 20
50+ bought in past month
Loading...
Rolanstar Queen Bed Frame with 4 Storage Drawers and Charging Station, Upholstered Bed Frame Queen Size with Adjustable Headboard and LED Lights, No Box Spring Needed, Easy Assembly, Black

Rolanstar Queen Bed Frame with 4 Storage Drawers and Charging Station, Upholstered Bed Frame Queen Size with Adjustable Headboard and LED Lights, No Box Spring Needed, Easy Assembly, Black

(2,736)
$279.99
$79.99 delivery Jun 19 - 25Only 9 left in stock.
Loading...
UPERFECT Portable Monitor 18.5 inch 120HZ 100% sRGB 1080P with VESA & Stand 180° Adjustable Ultra-Slim & Lightweight Frameless FHD FreeSync IPS HDR Gaming Display, Travel Second Monitor for Laptop

UPERFECT Portable Monitor 18.5 inch 120HZ 100% sRGB 1080P with VESA & Stand 180° Adjustable Ultra-Slim & Lightweight Frameless FHD FreeSync IPS HDR Gaming Display, Travel Second Monitor for Laptop

(2,824)
$294.49
Prime
Loading...
ROCHECASA Queen Bed Frame with USB Charging Socket and LED Light, Upholstered Bed with Height Adjustable Headboard, Noise Free, Easy Assembly, Dark Grey

ROCHECASA Queen Bed Frame with USB Charging Socket and LED Light, Upholstered Bed with Height Adjustable Headboard, Noise Free, Easy Assembly, Dark Grey

(182)
$179.99
FREE delivery Fri, Jun 20Only 5 left in stock.
50+ bought in past month
Loading...
Zinus Adjustable Bed Frame, Twin to Queen - Compack 7 Inch Metal Bed Frame for Box Spring , 9 Legs Heavy-Duty Frame, Easy Assembly, Headboard Compatiable with Built-in Bracket, Mattress Support

Zinus Adjustable Bed Frame, Twin to Queen - Compack 7 Inch Metal Bed Frame for Box Spring , 9 Legs Heavy-Duty Frame, Easy Assembly, Headboard Compatiable with Built-in Bracket, Mattress Support

(61,640)
$56.44$50.80
FREE delivery Wed, Jun 25
200+ bought in past month
Loading...
High Accuracy and LCD Digital Clear Display Non-Contact Photoelectric Velocimeter Mini RPM Tester Meter for Motor, Wheels, Lathe, Electrical Fan, Paper Making, Plastic Industry, Washing Machines

High Accuracy and LCD Digital Clear Display Non-Contact Photoelectric Velocimeter Mini RPM Tester Meter for Motor, Wheels, Lathe, Electrical Fan, Paper Making, Plastic Industry, Washing Machines

(0)
$13.53
FREE delivery Sun, Aug 10 on your first order
Loading...
AstroAl Digital Multimeter 2000, Multimeter Tester with Volt Amp Ohm, Multi Meter Measures Voltage, Current, Resistance, Continuity and Diode, Electrical Tester with Test Leads, Backlight LCD Display
Best Seller

AstroAl Digital Multimeter 2000, Multimeter Tester with Volt Amp Ohm, Multi Meter Measures Voltage, Current, Resistance, Continuity and Diode, Electrical Tester with Test Leads, Backlight LCD Display

(48,000)
$19.54
FREE delivery Mon, Aug 25 on your first order
2K+ bought in past month
Loading...
7-in-1 Soil&Water Meter Digital Plant Temperature/Soil Moisture/PH Meter/Sunlight Intensity/Fertility/EC/TDS Backlight LCD Display Soil Test Meter TDS EC Meter for Garden Indoor Outdoor

7-in-1 Soil&Water Meter Digital Plant Temperature/Soil Moisture/PH Meter/Sunlight Intensity/Fertility/EC/TDS Backlight LCD Display Soil Test Meter TDS EC Meter for Garden Indoor Outdoor

(20)
$37.98
FREE delivery Sun, Aug 10
Loading...
LYFDPN WS6906 3.5in LCD Display Data Digital Satellite Signal Finder Meter DVB-S Finder Meter Portable Measuring Instruments

LYFDPN WS6906 3.5in LCD Display Data Digital Satellite Signal Finder Meter DVB-S Finder Meter Portable Measuring Instruments

(0)
$168.16
$4.99 delivery Aug 27 - Sep 17