What structure has become useless through evolution but still exists, typically in a much reduced form?

A "vestigial structure" or "vestigial organ" is an anatomical feature or behavior that no longer seems to have a purpose in the current form of an organism of the given species. Often, these vestigial structures were organs that performed some important functions in the organism at one point in the past.

Explanation:

Go Direct Force and Acceleration couples a 3-axis accelerometer with a stable and accurate force sensor that measures forces as small as ±0.1 N and up to ±50 N.

Note: Vernier products are designed for educational use. Our products are not designed nor are they recommended for any industrial, medical, or commercial process such as life support, patient diagnosis, control of a manufacturing process, or industrial testing of any kind.

What's Included

Go Direct Force and Acceleration

Hook attachment

Bumper attachment

Nylon screw

Accessory Rod

Micro USB Cable

Compatible Software

Choose a platform below to see its compatibility requirements.

LabQuest

Computers

Chromebook

iOS

Android

Javascript

Scratch

Python

LabVIEW

Assembly

The hook and bumper attach to the sensor by screwing them into the post.

Hook attached

Bumper attached

Getting Started

Please see the following link for platform-specific connection information:

www.vernier.com/start/gdx-for

Bluetooth Connection

USB Connection

Install Graphical Analysis 4 on your computer, Chromebook™, or mobile device. See www.vernier.com/ga4 for software availability.

Charge your sensor for at least 2 hours before first use.

Turn on your sensor by pressing the power button once. The Bluetooth® LED will blink red.

Launch Graphical Analysis 4.

Click or tap Sensor Data Collection.

Click or tap your Go Direct sensor from the list of Discovered Wireless Devices. Your sensor's ID is located near the barcode on the sensor. The Bluetooth LED will blink green when it is successfully connected.

This is a multi-channel sensor. The active channel is listed in the Connected Devices Sensor Channels list. To change channels, select the check box next to the Sensor Channel(s) you would like to activate.

Click or tap Done to enter data‑collection mode.

If using a computer or Chromebook, install Graphical Analysis 4. If using LabQuest 2, make sure LabQuest App is up to date. See www.vernier.com/ga4 for Graphical Analysis 4 availability or www.vernier.com/downloads to update LabQuest App.

Connect the sensor to the USB port.

Launch Graphical Analysis 4 or turn on LabQuest 2. You are now ready to collect data.

This is a multi-channel sensor. To change the default channel selections, see www.vernier.com/start/gdx-for

Charging the Sensor

Connect Go Direct Force and Acceleration to the included Micro USB Cable and any USB device for two hours.

You can also charge up to eight Go Direct Force and Acceleration Sensors using our Go Direct Charge Station, sold separately (order code: GDX-CRG). An LED on each Go Direct Force and Acceleration indicates charging status.

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