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Ask Biology

Can the brain alter how our genes expressed?

I have been wondering something , in theory , if there was a way to infulence the brain / subconsious mind to alter genes, expression , would it be able to? There is a biologist, bruce litpon that believes the subconsious mind operate throught the membrane of the cell , and there have been studies […]

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Ask Games RPG Games

Tunnel defense effective against Specters? [DND 5E] [closed]

This is a fun one…DND 5E session. Assume a 5′ corridor that if 25′ long leading to a dead-end (5 squares), and 5 party members (all medium size) fill each of those squares. A well armored tank as at the front, trying to defend the party. This is the scenario a party has encountered a […]

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Database Development

PostgreSQL: duplicates despite having a unique constraint

We have a table in the production DB that looks like this: create table domains ( domain_id serial not null constraint domains_pkey primary key, domain_name text not null constraint domains_domain_name_key unique ) For some reason, we’ve got duplicates in that table, even though, in theory, this is impossible. Here’s a query that I use to […]

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Mastering Development

Conditional join in pandas datafrane

I have a dataframe where each line represents a train’s departure, another where each line represent a event that, in theory, happens every 13 seconds (roughly), and one that gives the travel’s expected duration for each train. The trains departures time actually correspond to a signal that is normally sent each time the train starts […]

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Ask Engineering

On measuring the common mode gain of an op-amp using a simulator?

I have been trying for a while now to measure the common voltage gain of the LM741, which according to Op Amps: Design, Application, and Troubleshooting page 21 is around 6, using Multsim and Orcad. The images bellow are from the same reference. So, in theory, if I realize the circuit above, and set the […]

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Ask Engineering

On measuring the common mode gain of an op-amp using a simulator?

I have been trying for a while now to measure the common voltage gain of the LM741, which according to Op Amps: Design, Application, and Troubleshooting page 21 is around 6, using Multsim and Orcad. The images bellow are from the same reference. So, in theory, if I realize the circuit above, and set the […]

Categories
Ask Engineering

On measuring the common mode gain of an op-amp using a simulator?

I have been trying for a while now to measure the common voltage gain of the LM741, which according to Op Amps: Design, Application, and Troubleshooting page 21 is around 6, using Multsim and Orcad. The images bellow are from the same reference. So, in theory, if I realize the circuit above, and set the […]

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Ask Chemistry

What happens to a photoelectron after it radiates the energy it had absorbed?

Say ,in theory, if a photoelectron after being ejected radiates it’s absorbed energy i.e loses its kinetic energy and there are no electronegative substances nearby,then what would happen to it? Since it no longer has an orbital/sub-shell to revolve around and no extra energy to propel it forwards,would it just fall downward until it hit […]

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Android User Help

Does Google Takeout contain Android Backup for my devices?

In theory, Google Takeout lets you download all the data Google stores for you (or about you). Among these there should be the backup content of my Android devices. Is it Android Backup included in the Takeout? Should it be? Is there a way to request that?

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Apple User Help

Connecting the Pro Display XDR to a Razer Blade Pro 2017

I have recently acquired the Pro Display XDR and used it with no issues on my 2020 MacBook Pro. However, when connecting my 2017 Razer Blade Pro, I get no response from the monitor, despite the display being detected on the Display Settings menu. It should be noted that I am using the cable that […]