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Platform Basics
Interacting with Presenters
Presenter Logistics
Help Options

Platform Basics

When will the Virtual April Meeting website be available? Thursday, April 15, 2021.

In which time zone will the meeting take place?

The 2021 April Meeting will take place in Central Daylight Time (UTC−05:00).

What are the system/technical requirements for the meeting?

The virtual meeting platform is mobile-friendly, but there will not be a mobile app.

If you have difficulty accessing the platform, make sure you are using one of the most current versions of the supported browsers: Chrome, Safari, Microsoft Edge, and Firefox. If you are using a company device and have a highly restrictive browser policy, make sure the following websites are allowed:

What are my meeting login credentials for the Virtual April Meeting website? You will use your APS web account credentials to login to the Virtual April Meeting website. If you are unable to login, please contact


How long will I be able to access video recordings of presentations?

Registered attendees of April Meeting will be able to view recordings until July 20, 2021.

When are recorded presentations expected to be available for viewing?
The recorded presentations will be available on the Virtual April Meeting Website within 24 to 72 hours after the session has ended. If the presentation you are looking for is not available in the recorded session video, the presenter did not give their consent to be recorded, therefore their presentation will not be posted.

Where will I access the recorded presentations during and after the meeting?
Within 24 to 72 hours after the session has concluded, you may watch the recorded video of the session by navigating to the desired session on the Virtual April Meeting website, then click on “Watch Again” on the video player screen.

Interacting with Presenters

What is the difference between an “On-demand” and “Live” presentation?
“Live” presentations will consist of presenters sharing their screen and explaining their work live. “On-demand” presentations are a pre-recorded video of a speaker presenting their work. “On-demand” presentations will not be played during the live sessions but will be available to attendees on the virtual meeting website for viewing at their discretion

**What is “Hallway Networking”, also known as Post-Session Networking?
**Hallway Networking or Post-Session Networking is a fully interactive Zoom meeting where you may network with fellow attendees and speakers up to 30 minutes after each session. Once you have found the session you are interested in by searching for it under “Sessions and Events”, scroll to the middle of the page and click on the “Join Post-Session Networking” button on the left-hand side of the page.

Presenter Logistics

As a live speaker, how will I present?

A Zoom link to your virtual presentation room and the accompanying instructions was emailed to you on April 13 with the subject line APS April Meeting 2021: Live Presenter Important Zoom Link and Instructions. Please check your spam folder if you do not see it

As a live speaker, how will attendees watch my presentation? Attendees will view your session from the April Meeting platform where your Zoom session will be broadcast.

How can I confirm that my presentation file was uploaded successfully?
You will receive a confirmation email within 24 hours of uploading.

As a poster presenter, how will I network with attendees?
During your assigned poster session, you will find your poster presentation on the Virtual April Meeting Website by navigating to the “Posters” square then searching for your name. Once you are on your poster page, you will see a “Chat with Author” drop down below the title of your poster which will present you with the video chat console. After allowing the website access to your microphone and camera, you will click “Join” and be able to wait for attendees to enter your “room” for Q&A. Additionally, the chat box on the left-hand side of your poster page, will be available throughout the meeting for attendees to ask you questions. You will be able to provide answers in the same chat box, so please remember to check it frequently throughout the meeting for any new questions.

Help Options

  • If you are presenting at the April Meeting in the next 24 hours or are experiencing a technical issue with the platform, visit the virtual APS Help Desk. Hours:
    • Friday, April 16: 10:00 a.m. - 3:00 p.m. CT
    • Saturday, April 17: 7:30 a.m. - 6:00 p.m. CT
    • Sunday, April 18: 8:00 a.m. - 6:00 p.m. CT
    • Monday, April 19: 8:00 a.m. - 6:30 p.m. CT
    • Tuesday, April 20: 8:00 a.m.- 5:00 p.m. CT
  • If you are looking for your presenter link, please search your inbox or spam filter for an email with subject line APS April Meeting 2021: Live Presenter Important Zoom Link and Instructions, sent on April 13.
  • If you have a question regarding meeting registration, please email
  • If you have a question regarding your abstract, please email
  • If you have a question regarding your APS membership, please email


**How do I obtain a certificate of attendance?
**Email to request your Certificate of Attendance.

Where did the imagery for the meeting come from?

The theme for the 2021 meeting is “Advancing Science in a Global and Inclusive Community.” The images are derived from the video, “Numerical simulation of a black-hole merger with asymmetric masses and orbital precession (GW190412)”, (© N. Fischer, H. Pfeiffer, A. Buonanno (Max Planck Institute for Gravitational Physics), Simulating eXtreme Spacetimes project).

This was released in conjunction with GW190412: Observation of a binary-black-hole coalescence with asymmetric masses. R. Abbott et al. (LIGO Scientific Collaboration and Virgo Collaboration), Phys. Rev. D 102, 043015.

The image portrays the merger of a remarkably asymmetric black hole duo, whose components weigh 8 and 30 solar masses, respectively. The concept of merging black holes relates to the theme of inclusivity in all of its dimensions, in spite of differences.